How do you store serum samples? Storage and shipment of serum samples
Serum should be stored at 4–8°C until shipment takes place, or for max. 7 days. When kept for longer periods, serum samples should be frozen at −20°C or lower and transported to the testing laboratory on frozen ice packs.
What must happen before a serum specimen is centrifuge? Serum specimens are obtained from tubes when the blood has been allowed to clot. Prior to centrifugation the specimen must be thoroughly clotted.
How long should a serum specimen tube before centrifugation? The correct spinning conditions for centrifuging serum specimens is 1100-1300 rpm for 15 minutes.
How long can you clot before centrifugation? (Minimum clotting time is 30 minutes for patients with an intact clotting process.) After allowing the clot to form, insert the tube in the centrifuge, stopper end up. Operate the centrifuge for 10 minutes at the speed recommended by the manufacturer. Prolonged centrifugation may cause hemolysis.