Folia Medica Indonesiana
ISSN 0303-7932
Vol. 50 / No. 1 / Published : 2014-01
Order : 3, and page :10 - 14
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Original Article :
Agreement between estimated apolipoprotein b-100 concentration and apolipoprotein b-100 concentration measured by immunoturbidimetric method
Author :
- Hadisiswoyo P*1
- Soehita S*2
- Anniwati L*3
- Resident at the Department of Clinical Pathology, Faculty of Medicine, Airlangga University, Surabaya
- Dosen Fakultas Kedokteran
- Dosen Fakultas Kedokteran
Abstract :
Apo B-100 is synthesized in the liver and only one apo B molecule exists in every LDL, IDL and VLDL particle, therefore, the level ofapo B-100 represents the total number of potentially atherogenic lipid. A formula estimating apo B-100 might help clinicians inareas with limited resources to identify patients with risk factors for cardiovascular disease, so proper management can be carriedout. To evaluate an agreement between estimated apolipoprotein B-100 concentration and apolipoprotein B-100 concentrationmeasured by immunoturbidimetric method. This study was an analytical observational cross sectional design. Serum samples werecollected using simple random sampling method and all specimens were measured for LDL-cholesterol, triglyceride andapolipoproten B-100 concentration. Estimated apo B-100 concentrations were counted using a [Apo B-100= -33.12 + 0.675 x LDL+ 11.95x ln (TG)] formula. Twenty nine of 30 samples (96.67%) showed estimated apo B-100 concentrations higher than measuredapo B-100 concentrations. Difference of the mean of estimated and measured apo B-100 concentration was 10.941 mg/dL, and wasstatistically significant (t= 9.134 (p <0.0001)). Concordance correlation coefficient (CCC) between estimated and measuredapolipoprotein B-100 concentration was 0.854 (<0.90= poor agreement). The agreement between estimated apo B-100concentration and apo B-100 concentration measured with immunoturbidimetric method was poor. Factors that might have causedthis result were freeze-thawing of samples prior to apo B-100 measurement using immunoturbidimetry and the use of triglyceride asone of the variables in the formula in estimating apo B-100.(FMI 2014;50:10-14)
Keyword :
Apo B-100, LDL-cholesterol, triglyceride, immunoturbidimetry,
References :
Brown SA, Epps DF, Dunn JK, Sharrett AR, Patsch JR, Gotto AM Jr, Patsch W,(1990) Effect of blood collection and processing on radioimmunoassay results for apolipoprotein B in plasma - : Clin Chem
Brunzell JD, Davidson M, Furberg CD, Goldberg RB, Howard BV, Stein JH, Witztum JL,(2008) Lipoprotein management in patients with cardiometabolic risk - : J Am Coll Cardiol
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