Can samples be stored temporarily?

Yes. Refrigerated samples can be held temporarily if same-day shipping is not possible, provided the test's stability window allows for it.

Storage requirements vary by analyte. Most routine chemistry panels are stable at 2–8°C for 24–48 hours. Some analytes (ammonia, lactic acid, ACTH) degrade rapidly and must be processed and shipped immediately. Always confirm stability requirements with the ordering lab before delaying shipment.