Related Experiment Video
Updated: Jul 3, 2026
05:58
Evaluation of a Point-of-Care Testing Analyzer for Measuring Peripheral Blood Leukocytes
Published on: March 22, 2022
Point-of-Care versus Central Laboratory Testing: Accuracy, Reliability, and Clinical Utility for Hematologic,
Dharmendra Dixit1, Koushik Biswas1, Priyanka Mishra2
1Department of Biochemistry, AIIMS, Raebareli, Uttar Pradesh, India.
Annals of African Medicine
|July 2, 2026
Summary
Point-of-care testing (POCT) offers faster results than central lab testing (CLT) but isn't always interchangeable. Electrolytes are generally reliable, but hemoglobin, hematocrit, and lactate POCT require lab confirmation to prevent errors.
Area of Science:
- Clinical Chemistry
- Critical Care Medicine
- Laboratory Diagnostics
Background:
- Point-of-care testing (POCT) offers rapid results in critical care settings.
- The analytical interchangeability between POCT and central laboratory testing (CLT) for key parameters remains a subject of debate.
Purpose of the Study:
- To evaluate the accuracy, reliability, and clinical utility of POCT compared to CLT.
- Focus on hematologic (hemoglobin, hematocrit), electrolyte (sodium, potassium), and metabolic (lactate) parameters.
Main Methods:
- Systematic review of observational evidence from 2015-2025.
- Comprehensive search of major biomedical databases.
- Comparative validity analysis of blood gas analyzers versus laboratory auto-analyzers in high-acuity settings.
Main Results:
- POCT significantly reduces turnaround times compared to CLT.
- Electrolytes show acceptable concordance, with minor method-related discrepancies.
- Hemoglobin and hematocrit measurements frequently lack interchangeability, with POCT showing overestimation and underestimation, respectively.
- Lactate precision decreases at high concentrations, increasing misclassification risk.
Conclusions:
- POCT is a valuable complement to, not a replacement for, CLT.
- Electrolytes are generally reliable for routine management via POCT.
- Hemoglobin, hematocrit, and elevated lactate POCT results necessitate laboratory confirmation to avoid therapeutic errors.
- Consistent use of the same analyzer is recommended for serial POCT monitoring.
Keywords:
Blood gas analysisGaz du sangelectrolytesemergency medicinehaemoglobinhémoglobinelactatemédecine d’urgencepoint-of-care testingtests au chevet du patientélectrolytesMore Related Videos
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