Can You Freeze Serum Separator Tubes?

Do not freeze plastic Serum Separator Tubes. An exception is a specimen submitted in a PPT tube; the plasma can be frozen and transported in the original tube.

Can you freeze EDTA tubes?

It can be stored for 12, 24 or 36 h prior to processing at 4°C and it can be frozen at −80°C for 20 days and then thawed under controlled conditions. Stability of the samples can different based on variety of assays used.

Why frozen serum samples should not be used for tests?

Repeated freezing and thawing of serum samples for IgM testing should be avoided, as it may have detrimental effects on the stability of IgM antibodies. As a general rule, serum specimens should be shipped to the laboratory as soon as possible.

Sarah Jenkins

Sarah Jenkins

Senior Technology Editor & AI Specialist

Sarah Jenkins is a veteran tech journalist with over 12 years of experience covering artificial intelligence, mobile innovations, and digital ethics. Her insights have appeared in leading technology publications worldwide.