Home Products Most Popular Contact
No items in your cart.
The page below is a sample from the LabCE course Phlebotomy. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

Learn more about Phlebotomy (online CE course) »
How to Subscribe


  • Serum is the fluid that is left over the coagulum after the specimen is centrifuged (spun down).
  • Serum contains all the same substances as plasma, except for the coagulation proteins, which are left behind in the blood clot.