Annual Report on External Quality Assessment in Inborn Error of Metabolism in Korea (2005) / 임상검사와정도관리

ABSTRACT

The trial of external quality assessment for inborn error of metabolism was performed in 2005. Total 11 specimens for the conventional newborn screening tests were distributed to 47 laboratories. The response rates were 92.5% (37/40) and 100% (47/47), in each trial. All the control materials were sent as filter paper forms. Each laboratory replied the test results of the screening items that they were doing as a routine test at the reception of the specimen among PKU screening, TSH, T4 (total/free), galactosemia screen, maple syrup urine disease screen, homocystinuria screen and histidinemia screen. The mean, SD, CV, median and range were analyzed. The pilot proficiency test for newborn screening using tandem mass spectrometry (MS/MS) was also performed. Total 8 blood spots were distributed to 9 laboratories performing newborn screening using MS/MS. Participants' results for amino acids & acylcarnitine and their cutoff values were analyzed.