COMPARISION BETWEEN BED SIDE TESTING OF BLOOD GLUCOSE BY GLUCOMETER Vs CENTRALIZED TESTING IN A TERTIARY CARE HOSPITAL

Ayaz Baig, Imran Siddiqui, Abdul Jabbar, Syed Iqbal Azam, Salman Sabir, Shahryar Alam, Farooq Ghani

Abstract


Background: To determine the accuracy, turnaround time and cost effectiveness of bedside
monitoring of blood glucose levels by non–laboratory health care workers and centralized testing
of blood glucose by automated analyzer in a tertiary care hospital. Methods: The study was
conducted in Section of Chemical Pathology, Department of Pathology and Microbiology and
Section of Endocrinology Department of Medicine, Aga Khan University and Hospital Karachi,
from April 2005 to March 2006.One hundred and ten patients were included in the study. The
blood glucose levels were analyzed on glucometer (Precision Abbott) by finger stick, using
Biosensor Technology. At the same time venous blood was obtained to analyze glucose in clinical
laboratory on automated analyzer (SYNCHRON CX7) by glucose oxidase method. Results: We
observed good correlation between bed side glucometer and laboratory automated analyzer for
glucose values between 3.3 mmol/L (60 mg/dl) and 16.7 (300 mg/dl). A significant difference was
observed for glucose values less than 3.3 mmol/L (p=0.002) and glucose values more than 16.67
mmol/l (p= 0.049). Mean Turnaround time for glucometer and automated analyzer were 0.08
hours and 2.49 hours respectively. The cost of glucose testing with glucometer was 48.8% lower
than centralized lab based testing. Conclusion: Bedside glucometer testing, though less expensive
does not have good accuracy in acutely ill patient with either very high or very low blood glucose
levels.
Key words: Bed side testing; Glucometer; Centralized glucose testing

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