Hello, do you need to ask the microbiology laboratory for calibration at least half a year? The microbiology laboratory is calibrated at least half a year. Microbiology laboratories require regular calibration to ensure the accuracy and reliability of their test results. According to the "Calibration Specifications for Medical Institutions", calibration of microbiology laboratories should be conducted at least once every six months. In addition, laboratories need to maintain and perform performance verification of equipment.