Document Detail

Haemolysis index--an estimate of preanalytical quality in primary health care.
MedLine Citation:
PMID:  19589105     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Haemolysis is usually caused by inadequate specimen collection or preanalytical handling, and is suggested to be a suitable indicator of pre-analytical quality. We investigated the prevalence of detectable haemolysis in all routine venous blood samples to identify differences in preanalytical quality. METHODS: Haemolysis index (HI) values were obtained from a Vitros 5,1 in the routine clinical chemistry laboratory for samples collected in primary health care centres (PHCs), nursing homes, and a hospital emergency department (ED). Haemolysis was defined as a HI > or =15 (detection limit). RESULTS: Samples from the PHC with the highest prevalence of haemolysis were 6.1 times (95% confidence interval (CI) 4.0-9.2) more often haemolysed compared to the centre with the lowest prevalence. Of the samples collected in primary health care, 10.4% were haemolysed compared to 31.1% in the ED (p<0.001). A notable difference in haemolysed samples was found between the ED section staffed by emergency medicine physicians and the section staffed by primary health care physicians (34.8% vs. 11.3%, p<0.001). CONCLUSIONS: The significant variation in haemolysis indices among the investigated units is likely to reflect varying preanalytical conditions. The HI is a valuable tool for estimation and follow-up of preanalytical quality in primary health care.
Johan Söderberg; P Andreas Jonsson; Olof Wallin; Kjell Grankvist; Johan Hultdin
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Clinical chemistry and laboratory medicine : CCLM / FESCC     Volume:  47     ISSN:  1434-6621     ISO Abbreviation:  Clin. Chem. Lab. Med.     Publication Date:  2009  
Date Detail:
Created Date:  2009-07-31     Completed Date:  2009-10-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9806306     Medline TA:  Clin Chem Lab Med     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  940-4     Citation Subset:  IM    
Department of Medical Biosciences, Clinical Chemistry, Umeå University, Umeå, Sweden.
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MeSH Terms
Aged, 80 and over
Blood Specimen Collection / standards*
Hemolysis / physiology*
Laboratories, Hospital / statistics & numerical data
Middle Aged
Osmotic Fragility
Primary Health Care / standards*
Quality Assurance, Health Care / standards

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