"PLASMA VENOUS GLUCOSE ESTIMATION - THE UNTOLD STORY"
Dr. Arun Kumar Harith (MD Biochemistry)*, Garima Boradia (M.Sc Biochemistry), Varun Kumar Singh (III year MBBS Student), Dr. Kanchan Kulhari (MD Biochemistry), Maansi Gangwal (III year MBBS
ABSTRACT
Introduction: Plasma venous Glucose estimation is one of the most commonly asked investigation in a clinical
setting. This test has a lot of pre-analytical variables affecting the final result, and patient participation in
providing sample is very essential. The present study was undertaken to determine the quality of pre-analytical
errors caused by the patients while giving their sample and quantify them. Material and Methods : A total of 400
cases were interviewed on the quality of the sample provided by them for analysis of plasma venous glucose. The
interview was done after the post prandial sample had been collected. The nature of fasting, the timing between the
fasting and the post prandial sample, the nature of exertion undertaken between providing the two samples and the
history of taking medications was specifically looked into and any deviations from the correct procedure was
considered as an error. Results: Of the 400 cases interviewed, only 138 patients had given a proper fasting and post
prandial sample. Nearly 34% of the post prandial samples were not collected on time. Also 24% of the samples
had more than one pre-analytical error in it, which could have significantly affected the final glucose results.
Conclusion: There are a lot of pre-analytical errors that are being created by the patients while giving the samples
for plasma venous Fasting and Post prandial glucose estimation. These errors are not being specifically looked for
and hence going undetected. The aim of this article is to sensitise health care workers on the magnitude of these
errors and suggest methods to reduce them.
Keywords: Pre Analytical errors, Glucose estimation, errors contributed by patients, fasting, postprandial, exercise.
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