Taking the first few steps towards recovering from your opiate addiction is huge. No matter how you ended up with your opiate addiction, you can always take steps to get clean. However, an important first step is to understand what to expect during your first week or two of opiate withdrawal.
With anticoagulant = plasma (still has soluble fibrinogen). Without anticoagulant = serum ( fibrinogen has been converted into insoluble fibrin in clot and is spun down with cells). Source(s): Medical Scientist. liz down under Â· 9 years ago.
Serum is the liquid portion of the blood after it has been allowed to clot. It is free of clotting proteins but contains the clotting. metabolites that result from the clotting process. It is a cleaner sample typically free of cells and platelets because they are. trapped in the fibrin meshwork of the clot.