Proficiency Testing Program in Hemoglobin Separation and Determination (การทดสอบความชำนาญด้านการตรวจหาชนิดและปริมาณฮีโมโกลบิน)

The proficiency testing program in hemoglobin separation and determination was organized by the National Institute ofHealth, Two quality control materials were sent to 9 participating laboratories throughout the country once every 3 months during January 1999 -December 2000. The analysts were required to examine the samples and laboratory results were subsequently submitted to National Institute of Health for statistical analysis. It was found that clinically significant errors were observed in 1 -2 participating laboratories in round 1, 2, 3, 4 and 6. Allmost all of the errors were due 10 higher level of Hb A than acceptable limit. After the 6 rounds, improved performances of all participating laboratories were clearly observed. All of them reported results within an acceptable range. It is thus illustrates the benefit of the proficiency testing program and its positive effect on the participating laboratories in working towards the improvement of analytical precision and accuracy.