Chapter 30: Point-of-Care Testing

By utilizing sophisticated biosensors, microchip technology, and miniaturized analytical devices, POCT significantly minimizes turnaround times, allowing for the prompt initiation of life-saving treatments in high-pressure settings like accident and emergency departments, neonatal units, and intensive care. Key clinical applications highlighted include the use of cardiac troponin assays for rapid myocardial infarction diagnosis, blood gas analysis, and the critical role of patient self-monitoring in diabetes mellitus through glucose and ketone measurements. While the immediacy of results can enhance clinical outcomes and reduce the length of hospital stays, the text cautions against potential pitfalls such as pre-analytical errors, discrepancies between bedside and laboratory reference ranges, and the relatively high direct costs of reagents compared to high-volume automated systems. Successful POCT integration ultimately demands rigorous quality control, comprehensive training for non-laboratory personnel, and a transparent audit trail to maintain the highest standards of clinical biochemistry and patient safety.