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1.
Yeungnam University Journal of Medicine ; : 123-127, 2017.
Article in Korean | WPRIM | ID: wpr-787035

ABSTRACT

Drug-induced immune hemolytic anemia (DIIHA) is a rare side effect of drugs. DIIHA may cause a systemic inflammatory response that results in acute multi-organ failure and death. Ceftizoxime belongs to the class of third generation cephalosporins, which are the most common drugs associated with DIIHA. Herein, we present a case of a 66-year-old man who developed fatal DIIHA after receiving a second dose of ceftizoxime. He was admitted to receive photodynamic therapy. He had a history of a single parenteral dose of ceftizoxime 3 months prior to admission. On the day of the procedure — shortly after the infusion of ceftizoxime — the patient's mental status was altered. The blood test results revealed hemolysis. Oliguric acute kidney injury developed, and continuous renal replacement therapy had to be applied. On the suspicion of DIIHA, the patient underwent plasmapheresis. Diagnosis was confirmed by a detection of drug-dependent antibody with immune complex formation. Although his hemolysis improved, his liver failure did not improve. He was eventually discharged to palliative care, and subsequently died.


Subject(s)
Aged , Humans , Acute Kidney Injury , Anemia, Hemolytic , Antigen-Antibody Complex , Ceftizoxime , Cephalosporins , Diagnosis , Hematologic Tests , Hemolysis , Liver Failure , Palliative Care , Photochemotherapy , Plasmapheresis , Renal Replacement Therapy
2.
Yeungnam University Journal of Medicine ; : 123-127, 2017.
Article in Korean | WPRIM | ID: wpr-84525

ABSTRACT

Drug-induced immune hemolytic anemia (DIIHA) is a rare side effect of drugs. DIIHA may cause a systemic inflammatory response that results in acute multi-organ failure and death. Ceftizoxime belongs to the class of third generation cephalosporins, which are the most common drugs associated with DIIHA. Herein, we present a case of a 66-year-old man who developed fatal DIIHA after receiving a second dose of ceftizoxime. He was admitted to receive photodynamic therapy. He had a history of a single parenteral dose of ceftizoxime 3 months prior to admission. On the day of the procedure — shortly after the infusion of ceftizoxime — the patient's mental status was altered. The blood test results revealed hemolysis. Oliguric acute kidney injury developed, and continuous renal replacement therapy had to be applied. On the suspicion of DIIHA, the patient underwent plasmapheresis. Diagnosis was confirmed by a detection of drug-dependent antibody with immune complex formation. Although his hemolysis improved, his liver failure did not improve. He was eventually discharged to palliative care, and subsequently died.


Subject(s)
Aged , Humans , Acute Kidney Injury , Anemia, Hemolytic , Antigen-Antibody Complex , Ceftizoxime , Cephalosporins , Diagnosis , Hematologic Tests , Hemolysis , Liver Failure , Palliative Care , Photochemotherapy , Plasmapheresis , Renal Replacement Therapy
3.
Journal of Laboratory Medicine and Quality Assurance ; : 59-67, 2016.
Article in Korean | WPRIM | ID: wpr-45811

ABSTRACT

We report here the results of the external quality assessment scheme (EQA) of blood bank tests in Korea carried out in 2015. The proficiency testing specimens used in the survey were prepared at Ajou University Hospital. The response rates from participating laboratories for the first and second trials were 98.7% (542/549) and 98.2% (544/554), respectively. No answers to tests were considered incorrect, and the average accuracy rates for six different test items on the standard survey were as follows: ABO grouping, 99.4% to 100.0%; RhD typing, 99.4% to 100.0%; crossmatching, 93.6% to 99.0%; direct antiglobulin test (DAT) using a polyspecific reagent, 92.9% to 98.3%; DAT using an IgG monospecific reagent, 94.6% to 100.0%; DAT using a C3d monospecific reagent, 84.2% to 98.6%; unexpected antibody screening test, 94.5% to 100.0%; and antibody identification test, 93.8% to 100.0%. We performed a pilot survey on reactivities to A1 (54 responses) and H (50 responses); Rh C, c, E, and e antigen testing (47 responses); and ABO antibody titration (10-34 responses). We obtained excellent results for this EQA, and these results will be helpful for improving or maintaining the quality of the participating laboratories.


Subject(s)
Blood Banks , Coombs Test , Immunoglobulin G , Korea , Laboratory Proficiency Testing , Mass Screening
4.
Korean Journal of Blood Transfusion ; : 31-37, 2016.
Article in Korean | WPRIM | ID: wpr-22648

ABSTRACT

BACKGROUND: Detection of anti-Kidd antibody is important because of its clinical significance. If detection is difficult due to weak serological reactivity or dosage effect, use of an enzyme method could be helpful. However, despite use of an enzyme method, we still observed weak reactivity of anti-Kidd antibody. METHODS: All identified anti-Kidd antibody cases from Jan 2012 to Aug 2015 in Asan Medical Center were reviewed. Antibody identification test was performed using the column agglutination technique using Bio-Rad ID-DiaPanel with LISS/Coombs card, Bio-Rad ID-DiaPanel-P with NaCl/Enzyme card, and ID-DiaPanel-P with LISS/Coombs card. The test results were compared. RESULTS: Sixty cases of anti-JK(a) or anti-Jk(b) were detected and tested by enzyme method. Among them, 34 (56.6%) cases showed strengthened reactivity using the ID-DiaPanel-P with NaCl/Enzyme card method. However, 26 (43.4%) cases showed weakened reactivity. Of these, 13 cases that could be tested by an additional method using ID-DiaPanel-P with LISS/Coombs card containing anti-IgG and anti-C3d showed successfully strengthened reactivity. CONCLUSION: The reactivity of anti-Kidd antibodies that was not strengthened using ID-DiaPanel-P with NaCl/Enzyme card method could be successfully strengthened by use of the ID-DiaPanel-P with LISS/Coombs card.


Subject(s)
Agglutination , Antibodies
5.
Korean Journal of Blood Transfusion ; : 103-122, 2015.
Article in Korean | WPRIM | ID: wpr-33289

ABSTRACT

All living creatures on this planet, from bacteria to human, produce sugar chains (glycans). This means that sugar chains are essential for living a life. Abundant, diverse, and highly regulated repertoire of glycans are synthesized by glycosylation process in cells. Located in proteins (N-glycans and O-glycans) and lipids (glycosphingolipids), glycans participate in many vital biological processes including molecular recognition, cell adhesion, molecular trafficking and clearance, receptor activation, and signal transduction. Histo-blood group antigens that are composed of sugar chains are expressed under the control of the Secretor, Lewis and ABO glycosyltransferases. They play important roles in microbial infections and cancers. Many of sugar chains associated with histo-blood group antigens are exploited as receptors for microorganisms. Aberrant glycosylation of proteins and lipids occurs commonly during malignant transformation and leads to the expression of tumor-associated glycans. In this review, over the scope of transfusion medicine, we discussed deep down the biologic meaning of sugar chains, through exploring how the sugar chains are synthesized, structured, and functioning.


Subject(s)
Humans , Bacteria , Biological Phenomena , Cell Adhesion , Glycosylation , Glycosyltransferases , Planets , Polysaccharides , Signal Transduction , Transfusion Medicine
6.
Annals of Laboratory Medicine ; : 436-444, 2015.
Article in English | WPRIM | ID: wpr-114434

ABSTRACT

BACKGROUND: The therapeutic efficacy of red blood cell (RBC) transfusions in patients with autoimmune hemolytic anemia (AIHA) is highly debated because of speculations on the increased risk of transfusion reactions; yet it is a suggested adjuvant therapy in anemic patients with life-threatening hypoxemia. In this study, we evaluated the safety and efficacy of RBC transfusions in AIHA patients. METHODS: Daily changes in hemoglobin, total bilirubin, and lactate dehydrogenase (LDH) were assessed in 161 AIHA patients without bleeding history who were transfused once with 1-5 units of the least-incompatible RBCs and monitored over a seven-day period. Post-transfusion patients positive for alloantibodies only or those without RBC-specific antibodies were considered as control groups (N=100 for both groups). RESULTS: The three groups revealed similar increases in hemoglobin of 1.40-1.70 g/dL (autoantibodies), 1.20-1.60 g/dL (alloantibodies only), and 1.40-1.55 g/dL (no antibodies) for seven days following transfusion of 10 mL RBCs/kg. During follow-up, no significant changes in total bilirubin or LDH levels were detected in the AIHA group compared with controls. Influences due to autoantibody type, direct antiglobulin test (DAT) specificity and strength, and steroid therapy status on transfusion reactions were not evident in AIHA patients. In addition, changes in hemoglobin levels were significantly higher (P<0.001) in severe anemia (<5 g/dL) than in other patients. CONCLUSIONS: Transfusion of the least-incompatible RBCs in AIHA patients is effective and safe without any associated increase in hemolysis risk when compared with post-transfusion patients positive for alloantibodies or those lacking RBC-specific antibodies.


Subject(s)
Humans , Anemia , Anemia, Hemolytic, Autoimmune , Hypoxia , Antibodies , Autoantibodies , Bilirubin , Blood Group Incompatibility , Coombs Test , Erythrocyte Transfusion , Erythrocytes , Follow-Up Studies , Hemolysis , Hemorrhage , Isoantibodies , L-Lactate Dehydrogenase
7.
Journal of Laboratory Medicine and Quality Assurance ; : 47-55, 2015.
Article in Korean | WPRIM | ID: wpr-104676

ABSTRACT

We report here the results of surveys on external quality assessment (EQA) of blood bank tests in Korea carried out in 2014. The proficiency testing specimens were prepared at Ajou University Hospital and the response rates for the 1st and 2nd trials were 94.3% (537/549) and 96.0% (545/554), respectively. No answers were considered incorrect, and the average accuracy rates of six different test items on the regular survey were as follows: ABO grouping, 98.5% to 100.0%; RhD typing, 98.1% to 99.4%; crossmatching, 91.2% to 99.6%; direct antiglobulin test (DAT) using a polyspecific reagent, 96.7% to 98.4%; DAT using an immunoglobulin-G monospecific reagent, 93.8% to 98.7%; DAT using a C3d monospecific reagent, 89.5% to 98.7%; unexpected antibody screening test, 96.2% to 100.0%; and antibody identification test, 69.8% to 100.0%. Test items for the pilot survey were reactivities to anti-A1 and anti-H, Rh subgrouping, and ABO antibody titration. Except for the result of the antibody identification test for specimens with multiple antibodies, we obtained excellent survey results for the EQA of blood bank tests carried out in 2014. In addition, the number of participating institutes was higher in 2014 than in 2013. The EQA of blood bank tests in 2014 should be helpful for improving the quality of the participating laboratories.


Subject(s)
Academies and Institutes , Antibodies , Blood Banks , Coombs Test , Korea , Laboratory Proficiency Testing , Mass Screening
8.
Korean Journal of Blood Transfusion ; : 160-164, 2014.
Article in Korean | WPRIM | ID: wpr-23664

ABSTRACT

Anti-f(ce) has been associated with hemolytic transfusion reaction (HTR) and hemolytic disease of the fetus and newborn (HDFN), however, anti-Cs(a) has not been associated with red blood cell (RBC) destruction. Although anti-Cs(a) has clinical insignificance as a high-titer low-avidity (HTLA) antibody, this antibody can cause confusion in interpreting an antibody identification test, particularly coexistence of a clinically significant antibody. A 65-year-old woman with liver metastases of Klatskin tumors and cholangitis was admitted to the hospital for abdominal pain. She developed hematochezia on hospital day 10. She was at the status of active bleeding and required transfusion. The result of antibody identification test was warm-reactive autoantibody and unidentifiable alloantibody, therefore, the least incompatible packed RBCs had to be transfused to the patient. No hemolytic transfusion reaction occurred and hemoglobin level was normalized. Thereafter, anti-f(ce) and anti-Cs(a) antibodies were identified in the patient's serum. To the best of our knowledge, this is the first report of anti-f and anti-Cs(a) antibodies in Korea.


Subject(s)
Aged , Female , Humans , Infant, Newborn , Abdominal Pain , Antibodies , Blood Group Incompatibility , Cholangitis , Erythrocytes , Fetus , Gastrointestinal Hemorrhage , Hemorrhage , Klatskin Tumor , Korea , Liver , Neoplasm Metastasis
9.
Journal of Laboratory Medicine and Quality Assurance ; : 55-63, 2014.
Article in Korean | WPRIM | ID: wpr-65818

ABSTRACT

We report here the results of surveys for External Quality Assessment (EQA) of blood bank tests carried out in 2013. The proficiency testing specimens were prepared at Ajou University Hospital and sent to 548 and 545 institutes participating in the 1st and 2nd trial, respectively. Test items for the surveys were ABO grouping, RhD typing, crossmatching, direct antiglobulin test (DAT), antibody screening test, and antibody identification test. The response rates for the 1st and 2nd trials were 94.3% and 96.0%, respectively. No answers were considered incorrect answers, and the average accuracy rates of different test items of the survey were as follows: ABO grouping, 98.9% to 100%; RhD typing, 98.4% to 99.2%; crossmatching, 94.4% to 100.0%; DAT using polyspecific reagent, 94.5% to 99.7%; DAT using IgG monospecific reagent, 94.7% to 98.8%; DAT using C3d monospecific reagent, 91.3% to 98.6%; unexpected antibody screening test, 90.9% to 100%; and antibody identification test, 87.3% to 100.0%. Overall, we obtained excellent survey results for the EQA of blood bank tests carried out in 2013, and the number of participating institutes was higher in 2013 than in 2012.


Subject(s)
Academies and Institutes , Blood Banks , Coombs Test , Immunoglobulin G , Korea , Laboratory Proficiency Testing , Mass Screening
10.
Korean Journal of Blood Transfusion ; : 286-290, 2013.
Article in Korean | WPRIM | ID: wpr-40698

ABSTRACT

Intravenous immune globulin (IVIG) is widely used in treatment of hypogammablobulinemia and for immunomodulation. Passive transfer of anti-D activity through administration of IVIG may cause difficulty in serologic assessment of patients. Here we report on a case of passive anti-D from IVIG in a D positive patient. The patient was a 72-year-old Korean woman who was hospitalized for refractory immune thrombocytopenic purpura that is not cured after steroid therapy. IVIG 6,000 mg was administered for treatment of immune thrombocytopenic purpura. After IVIG administration for two days, we identified anti-D in the patient and a positive direct antiglobulin test was demonstrated. The patient's hemoglobin level remained unchanged. After IVIG administration for 10 days, the patient's specimen was negative for anti-D, as would be expected with passively acquired antibody. Antibodies in IVIG may confuse and complicate serologic testing of transfusion candidates. Therefore, passive transfer of anti-D should be considered when anti-D is detected, especially when the patient has received IVIG, as in this case.


Subject(s)
Aged , Female , Humans , Antibodies , Coombs Test , Immunoglobulins, Intravenous , Immunomodulation , Purpura, Thrombocytopenic, Idiopathic , Serologic Tests
11.
Blood Research ; : 167-168, 2013.
Article in English | WPRIM | ID: wpr-172224

ABSTRACT

No abstract available.

12.
Korean Journal of Hematology ; : 59-59, 2011.
Article in English | WPRIM | ID: wpr-720117

ABSTRACT

No abstract available.


Subject(s)
Memory
13.
Korean Journal of Blood Transfusion ; : 161-170, 2011.
Article in Korean | WPRIM | ID: wpr-10517

ABSTRACT

BACKGROUND: Although therapeutic plasmapheresis (TP) is a useful procedure in removing pathogenic antibodies and toxic substances from the patient, adverse reactions could arise from the use of replacement fluids and anticoagulants. Comprehensive analysis on those adverse effects had been rarely reported in Korea. METHODS: We retrospectively investigated the clinical records and the TP records from 3,962 TP sessions for 581 patients between January 1995 and October 2008 at Asan Medical Center, and we analyzed the adverse reactions related to TP. RESULTS: Adverse reactions were seen in 142 patients (24.4%) in 348 TP procedures (8.8%). Citrate toxicity was most frequently seen in 83 procedures (23.9%) followed by chills in 72 procedures (20.7%), allergic reactions in 69 procedures (19.8%) and hypotension in 60 procedures (17.2%). Citrate toxicity, chills and allergic reactions were seen more frequently in the TP procedures using FFP than in the TP procedures using albumin (P=0.001). The prevalence of citrate toxicity was significantly lower in the cases where calcium gluconate was administered (P<0.001), while it was significantly higher in the patients whose hematocrit was below 28.5% (P<0.001). In terms of severity, the mild, moderate and severe adverse reactions were 36.8%, 56.3% and 6.9%, respectively. CONCLUSION: TP is a relatively safe method of treatment, but it is important to predict and prevent adverse reactions and to respond appropriately to these adverse reactions.


Subject(s)
Humans , Antibodies , Anticoagulants , Calcium Gluconate , Chills , Citric Acid , Gluconates , Hematocrit , Hypersensitivity , Hypotension , Plasmapheresis , Prevalence , Retrospective Studies
14.
Korean Journal of Blood Transfusion ; : 24-30, 2011.
Article in Korean | WPRIM | ID: wpr-125629

ABSTRACT

BACKGROUND: The ABO antibody titration is important, especially in case of ABO-incompatible hemolytic disease of newborn, ABO-incompatible bone marrow or solid organ transplantation. However, no standard method for ABO antibody titration has yet been established. We surveyed four university hospitals about the methods of ABO antibody titration and performed inter-laboratory proficiency tests. METHODS: Detailed methods of ABO antibody titration were surveyed at four university hospitals. ABO antibody titer was measured by their customary methods using serum samples from six healthy volunteers with blood groups A (n=2), B (n=2) and O (n=2). RESULTS: Procedures of ABO antibody titration, reportable ranges, sample diluent, source of reagent RBCs and interpretation of end-point were different among four university hospitals. Inter-institutional maximum differences of IgM and IgG ABO antibody titer were 16-fold and 32-fold, respectively. CONCLUSION: Standardization of ABO antibody titration method is needed to reduce inter-laboratory variability, and a periodical external quality control survey is necessary to improve the accuracy of the titration.


Subject(s)
Infant, Newborn , Blood Group Antigens , Bone Marrow , Erythroblastosis, Fetal , Hospitals, University , Immunoglobulin G , Immunoglobulin M , Korea , Organ Transplantation , Quality Control , Transplants
15.
Korean Journal of Nephrology ; : 386-393, 2011.
Article in Korean | WPRIM | ID: wpr-127452

ABSTRACT

PURPOSE: ABO incompatibility had long been an obstacle in kidney transplantation. However, recent reports showed excellent outcomes. In this study, we evaluated the outcomes of ABO incompatible kidney transplantation with preconditioning protocol using rituximab and plasmapheresis. METHODS: The recipients who had an ABO-incompatible donor and underwent living donor kidney transplantation were enrolled. Preconditioning protocol was pretransplant single dose rituximab with plasmapheresis at pretransplantation 7-10 days. Immune suppression regimen consisted of tacrolimus, mycophenolate mofetil and steroid. Anti-A or anti-B antibody titer was monitored during preconditioning and post transplantation period. RESULTS: 37 patients underwent living donor ABO incompatible kidney transplantation. Median pre-treatment antibody titer was 1:64 and pre transplant antibody titer after 1-6 times of plasmapheresis was 1:2. Median follow-up duration was 332 days (range 156-681). One episode of acute T cell mediated rejection was observed. Mean serum creatinine at 2 weeks was 1.00+/-0.27 mg/dL and at 24 weeks was 1.21+/-0.37 mg/dL. CONCLUSION: ABO incompatible kidney transplantation with rituximab and plasmapheresis can be safely performed. It is therefore a valuable option for expanding donor pool and should be actively performed in Korea.


Subject(s)
Humans , Antibodies, Monoclonal, Murine-Derived , Creatinine , Follow-Up Studies , Kidney , Kidney Transplantation , Korea , Living Donors , Mycophenolic Acid , Plasmapheresis , Rejection, Psychology , Tacrolimus , Tissue Donors , Transplants , Rituximab
16.
Korean Journal of Hematology ; : 77-78, 2010.
Article in English | WPRIM | ID: wpr-720281

ABSTRACT

No abstract available.

17.
Journal of Laboratory Medicine and Quality Assurance ; : 95-101, 2010.
Article in Korean | WPRIM | ID: wpr-10374

ABSTRACT

BACKGROUND: We report here the results of surveys for external quality assessment of blood bank tests performed in 2009. METHODS: Survey specimens were sent three times to 488, 491 and 490 participant institutes, and the response rates for the 1st, 2nd and 3rd trial were 97.7%, 98.0%, and 98.0%, respectively. Test items for the surveys were ABO grouping, Rh (D) typing, crossmatching, direct antiglobulin test, antibody screening and antibody identification test. RESULTS: The average accuracy rates of ABO grouping and Rh typing were 99.6-100% and 98.5-100%, respectively. In crossmatching test, the accuracy rates were 99.3-99.8% for the compatible samples, 92.7-100% for the incompatible samples, and 92.6-93.1% for the samples which could be detected as incompatible only by antiglobulin method. The accuracy rates of direct antiglobulin test were 98.5-100% for negative samples and 98.1-98.8% for positive samples. The correctresults were reported by 98.0-100% of the surveyed institutions for antibody screening test and 82.9-100% for antibody identification test. Nineteen institutions gave repeatedly incorrect answers for crossmatching test. Eight institutions out of them gave incorrect answers for all the test specimens sent out 3 times last year. CONCLUSIONS: The overall results of this survey were good, however, it is required that the institutions where the incorrect results were reported should perform corrective actions for quality improvement.


Subject(s)
Academies and Institutes , Blood Banks , Coombs Test , Korea , Mass Screening , Quality Improvement
18.
Korean Journal of Blood Transfusion ; : 171-174, 2010.
Article in Korean | WPRIM | ID: wpr-165955

ABSTRACT

Anti-Ok(a) was detected in a 56-year-old female patient who was admitted for surgical treatment of degenerative scoliosis. Because Oka is a high-incidence antigen, anti-Ok(a) antibody is extremely rare. No case of hemolytic transfusion reaction or hemolytic disease of the fetus and newborn caused by anti-Ok(a) antibody has been reported so far, however, it is likely that anti-Ok(a) is clinically significant based on several in vivo and in vitro studies. When a patient who is bearing anti-Ok(a) needs transfusion of RBCs, transfusion of autologous blood or Ok(a-) RBCs from family members is recommended.


Subject(s)
Female , Humans , Infant, Newborn , Middle Aged , Blood Group Incompatibility , Fetus , Korea , Scoliosis , Ursidae
19.
The Journal of the Korean Society for Transplantation ; : 244-251, 2009.
Article in Korean | WPRIM | ID: wpr-155418

ABSTRACT

BACKGROUND: Severe graft dysfunction has been occasionally encountered following adult living donor liver transplantation (LDLT). This study intended to assess the effectiveness of plasmapheresis (PP) as a liver supportive measure in LDLT recipients showing severe graft dysfunction. METHODS: During 1 year of 2007, 276 adult LDLTs were performed in our institution. Of them 27 underwent PP therapy as a liver support. RESULTS: Seventeen underwent PP during the first month following LDLT and another 10 underwent PP after that period. The underlying causes of such liver support were acute and chronic rejections, ischemic damage, viral hepatitis recurrence and unknown causes. A total of 329 sessions of PP were performed for these 27 patients, indicating 12.2+/-9.9 times per patient for 28.1+/-32.2 days. Concurrent hemodiafiltration was done in 66.7%. Serum total bilirubin level was significantly reduced following PP therapy: 23.2+/-6.5 mg/dL before PP and 14.4+/-5.6 mg/dL at 1 week after completion of PP (P<0.001). Other biochemical parameters did not significantly affected by PP. Overall 1-year patient survival rate was 63.0%. Six-month graft survival rate after completion of PP was 82.6% in 17 patients undergoing PP during the first posttransplant month and 30% in 10 patients undergoing PP after 1 month (P= 0.013). CONCLUSIONS: The results of this study implicate that PP has a beneficial effect on the recovery of liver graft function, especially during the early posttransplant period. We suggest to perform active application of PP therapy for liver recipients showing severe graft dysfunction of total bilirubin greater than 15~20 mg/dL.


Subject(s)
Adult , Humans , Bilirubin , Graft Survival , Hemodiafiltration , Hepatitis , Liver , Liver Transplantation , Living Donors , Plasmapheresis , Recurrence , Rejection, Psychology , Survival Rate , Transplants
20.
Journal of Laboratory Medicine and Quality Assurance ; : 99-104, 2009.
Article in Korean | WPRIM | ID: wpr-54348

ABSTRACT

We report here the results of surveys for external quality assessment of blood bank tests performed in 2008. Survey specimens were sent three times to 460, 470 and 473 participant institutes, and the response rates for the 1st, 2nd and 3rd trial were 97.6%, 97.7%, and 97.7%, respectively. Test items for the surveys were ABO grouping, Rh (D) typing, crossmatching, direct antiglobulin test, antibody screening and antibody identification test. The average accuracy rates of ABO grouping and Rh typing were 100% and 98.3-100%, respectively. In crossmatching test, the accuracy rates were 97.5-99.7% for the compatible samples, 92.4-99.2% for the incompatible samples, and 88.2-98.9% for the samples which could be detected as incompatible only by antiglobulin method. The accuracy rates of direct antiglobulin test were 98.4-99.7% for negative samples and 93.4-99.7% for positive samples. The correct results were reported by 99.6-100% of the surveyed institutions for antibody screening test and 98.2-100% for antibody identification test. Twenty-three institutions gave repeatedly incorrect answers for crossmatching test. Ten institutions out of them gave incorrect answers for all the test specimens sent out 3 times last year.


Subject(s)
Academies and Institutes , Blood Banks , Coombs Test , Korea , Mass Screening
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