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Abstract
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Article Information:
The Effect of Sample Storage on Total Cholesterol and Hdl-cholesterol Assays
C. Maduka Ignatius, E. Neboh Emeka, J. Ikekpeazu Ebele, V. Muoghalu Chinelo, E. Ejezie Fidelis and A. Ufelle Silas
Corresponding Author: Ignatius Chukwudi Maduka
Submitted: 2009 May, 01
Accepted: 2009 June, 06
Published: |
Abstract:
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The result of sample analysis is said to be as good as the sample collection and preparation. Without
adequate sample handling, accuracy and precision of sample analysis will be greatly affected. The effect of
sample storage temperature and length of storage time on serum total cholesterol (TC) and HDL-cholesterol
(HDL-C) assays was studied using twenty different samples, pooled into three. Each pool was split into three
and stored at different temperatures- room temperature (16 - 25 /C), refrigerator (4 /C) and freezer temperature
(-20 /C), for 6, 30 ad 51 days respectively. The observations from the results obtained using day zero as control
showed that the TC concentration in the samples stored at room temperature increased with the length of
storage time. How ever, these increases were not statistically significant (P>0.05), for the duration of the study.
HDL-C concentration was found to be significantly increased (p=0.0211 and 0.0117) from day 2 and 10, at
room and refrigerator temperatures respectively. However, there was no statistically significant difference
(P>0.05) in the samples stored at freezer temperature in both TC and HDL-C concentrations. Except for the TC
concentration in the sample stored at freezer temperature, the samples showed a significant correlation at room,
refrigerator and freezer temperatures respectively with the duration of storage. From this study, it can be
concluded that the concentrations of TC and HDL-C in stored sam ples are both time and temperature
dependent. Also, the concentration is mostly affected at room temperature and least affected at freezer
temperature. Hence, if samples for TC and HDL-C assays are to be stored, freezer temperature is highly
preferred.
Key words: Sample, storage, Total cholesterol, HDL-Cholesterol, Room temperature, Refrigerator, Freezer, Assay, duration, effect
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Cite this Reference:
C. Maduka Ignatius, E. Neboh Emeka, J. Ikekpeazu Ebele, V. Muoghalu Chinelo, E. Ejezie Fidelis and A. Ufelle Silas, . The Effect of Sample Storage on Total Cholesterol and Hdl-cholesterol Assays. Current Research Journal of Biological Sciences, (2): Page No: 1-5.
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ISSN (Online): 2041-0778
ISSN (Print): 2041-076X |
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