How long can sputum sample stay good before being analyzed?

Sputum samples should ideally be analyzed within 1 to 2 hours of collection for optimal accuracy, as the viability of microorganisms can decline over time. If immediate analysis isn't possible, samples can be refrigerated at 2-8°C for up to 24 hours. However, prolonged storage may affect the quality and reliability of test results. For best practices, it's recommended to follow specific guidelines provided by the testing laboratory.