J Lab Med Qual Assur.  2008 Jun;30(1):49-74.

Annual Report on External Quality Assessment in Immunoserology in Korea (2007)

Affiliations
  • 1Immunoserology Subcommittee, The Korean Association of Quality Assurance for Clinical Laboratory, Seoul, Korea. chayoung@cau.ac.kr

Abstract

The followings are the results for external quality assessment (EQA) in immunoserology for 2007: 1. Evaluation of EQA was done in 2 trials in May and December, about 99% of laboratories participating average 7.8 items. The results were collected via internet for the first time and 96~98% of laboratories have sent their results via internet. 2. All the specimens for Immunoserology in EQA were delivered refrigerated, being received within 48 hours after sending. 3. Commercial controls, MASR Immunology Control from Medical Analysis Systems (Camarillo, CA, USA) were used to assure the quality of quantitative results of C-reactive protein (CRP), rheumatoid factor (RF) and anti- streptolysin O (ASO) tests, and the RF results of MASR Immunology Control were variable depending on the reagents used. 4. The laboratories using immunochromatography assay (ICA) were increased, however, many laboratories using ICA reported falsely negative for the positive specimens. The sensitivity of ICA test kits as well as various factors influencing the ICA results should be evaluated. 5. The HBsAg results of the ACCURUN 1R Multi-Marker Positive Control (Boston Biomedica Inc. USA) were falsely reported as negative in some laboratories using arbitrarily determined cutoff. 6. Standardization of methods including calibrators for quantitative results should be required for the harmonization of results.

Keyword

Immunoserology; External quality assessment; HBsAg; Anti-HBs; Anti-HCV; Anti-HIV; CRP; RF; ASO; Widal; STS; ICA; CIA; EIA; MEIA; Nephelometry; TIA

MeSH Terms

Bacterial Proteins
C-Reactive Protein
Hepatitis B Surface Antigens
Immunochromatography
Indicators and Reagents
Internet
Korea
Nephelometry and Turbidimetry
Rheumatoid Factor
Streptolysins
Bacterial Proteins
C-Reactive Protein
Hepatitis B Surface Antigens
Indicators and Reagents
Rheumatoid Factor
Streptolysins
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