Quality Assurance and Control in SGOT and SGPT Testing: A Study in Type C Hospitals in Sidoarjo

Abstract

Quality management in SGOT and SGPT examinations is vital to ensure accurate and precise laboratory results, which are essential for diagnosing and monitoring liver function. Internal quality assurance is performed daily to assess results, detect deviations, and implement corrective actions. This study uses a descriptive explorative approach based on field observations to analyze quality assurance practices for SGOT and SGPT tests at a type C hospital in Sidoarjo. Data were collected through direct observation, review of quality control documentation, and interviews with laboratory staff over a one-month period in August 2025. Inclusion criteria included laboratories implementing both internal and external quality assurance systems, while those focusing solely on instrument test outputs were excluded. Observations revealed that quality assurance practices consisted of daily internal QC, monthly external QC participation, and periodic instrument calibration. These practices were found to significantly enhance test reliability and reduce error rates. The findings highlight that consistent monitoring, timely corrective actions, and adherence to standard protocols are essential for ensuring valid and accountable results in liver function testing. This study provides an overview of the implementation, benefits, and challenges of quality assurance in clinical laboratories, emphasizing its critical role in improving the accuracy and reliability of SGOT and SGPT examinations.