Question

after drawing blood into an sst, what is the next step? put the serum into the transfer tube have the tube stand upright for 30 - 45 minutes centrifuge the tube place the tube in the refrigerator

Explanation:

After drawing blood into a Serum - Separation Tube (SST), the standard practice is to let the tube stand upright for 30 - 45 minutes to allow for clotting and separation of serum from cells. Centrifuging immediately may lead to incomplete clotting and inaccurate results. Transferring serum to a transfer tube is done after centrifugation, and refrigeration is not the next - step right after drawing blood into an SST.

Answer:

Have the tube stand upright for 30 - 45 minutes