Abstract:
BACKGROUND:The purpose of an external quality assessment (EQA) is to evaluate the analytical capability of clinical laboratories, identify differences among the laboratories and improve analytical quality. Our EQA results show that the rates of unsatisfactory performance for thyroid hormone tests were the highest in all of our EQA programs. Therefore, the main purpose of this study was to investigate unsatisfactory results by comparing the analytical values of five routinely used analytical systems. METHODS:The Kruskal-Wallis and two-sample Kolmogorov-Smirnov tests were used to identify analytical differences among and between analytical systems, respectively. RESULTS:The rates of significantly different results compared to the total number of analytical results were 81.1%, 64.5%, 93.3%, 50.0% and 56.7% for free triiodothyronine, total triiodothyronine, free thyroxine, total thyroxine and thyroid-stimulating hormone, respectively. CONCLUSIONS:Relatively large analytical differences between analytical systems were observed, especially when the analytical systems were used to measure free thyroid hormones.
journal_name
Clin Chem Lab Medjournal_title
Clinical chemistry and laboratory medicineauthors
Zhou Q,Li S,Li X,Wang W,Wang Zdoi
10.1515/CCLM.2006.251subject
Has Abstractpub_date
2006-01-01 00:00:00pages
1363-6issue
11eissn
1434-6621issn
1437-4331journal_volume
44pub_type
杂志文章abstract:BACKGROUND:In analogy with other areas of laboratory diagnostics, the pre-analytical phase is the leading source of variability also in urinalysis. We carried out a multicentric study for comparing results obtained from first-voided and mid-stream urine samples. METHODS:Each of the six hospital-based clinical laborato...
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journal_title:Clinical chemistry and laboratory medicine
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journal_title:Clinical chemistry and laboratory medicine
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