Research on a new microtubule technology of reagent bursting for crossmatching test / 中国输血杂志

ABSTRACT

【Objective】 To develop a quick and accurate crossmatching test technology without the power equipment and additional reagents before blood transfusion, so as to improve the timeliness and safety of blood transfusion treatment in sudden situations as war or natural disasters. 【Methods】 The irregular antibodies quickly promote coagulants (QPC) were used as the reaction medium reagent. The 200 μL QPC were wrapped in the bursts bead and preset within different recess of the detection tubes. The bursts beads were squeezed with the reagent left in the well, then the blood samples were dropped in the main(recipient plasma 200 μL, donor 3%—5% RBC 100 μL) and secondary(donor plasma 200 μL, recipient 3%—5% RBC 100 μL)reaction grooves. The result interpretated by hand wrestling or 1 500 g centrifugation of 15 seconds. Meanwhile, the comparing experiments with the prior methods were implemented to evaluate the method’s reliability. 【Results】 The results of the bursting reagent, being stored at 37℃ for one week, were consistent with those of the freshly prepared cross-matching reagent, indicating that the bursting reagent was practical in the field and had good stability at normal temperature. No statistical difference between the sensitivity and the results of the microcolumn gel method was noticed by paired data t test (P>0.05). The parallel cross matching tests of 50 clinical samples were performed by microcolumn gel method and coagulant-bursting technique; the Kappa value was 0.973 2, and irregular antibodies were detected in 2 cases, with concordance rate at 100%, showing good consistency. 【Conclusion】 The improved method is simple and fast, and also safe and reliable for compatibility testing before blood transfusion, which is especially suitable for the field rescue of the wounded in wartime and sudden natural disasters, and is worthy of popularization.