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Updated: Jul 21, 2026

Evaluation of a Point-of-Care Testing Analyzer for Measuring Peripheral Blood Leukocytes
Published on: March 22, 2022
Field-testing and validation in a primary care setting of a point-of-care test for C-reactive protein
David A Seamark1, Susan N Backhouse, Roy Powell
1Honiton Research Practice, Marlpits Lane, Honiton EX14 2NY, UK. David.Seamark@gp-L83002.nhs.uk
Background:
Use of point-of-care testing (POCT) in primary care has increased. There is a need for high-quality field evaluation of POCT before deployment can be considered.
Method:
A POCT system for C-reactive protein was evaluated in a routine general practice setting. The standard laboratory method was a dry slide method based in a routine hospital laboratory.
Results:
Scatterplots for both venous and capillary blood POCT system results versus the standard laboratory assay produced correlation coefficients of greater than 0.96. Bland-Altman plots indicated that 95% of venous and capillary POCT results fell within +/-10 mg/L of the mean value with no clinically significant difference from laboratory results.
Conclusions:
The POCT system performed reliably in a routine general practice setting with satisfactory performance against an accepted laboratory method.
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