How do labs handle bloodstained CSFs (specifically for protein and
glucose)? It's relatively easy to reject a heavily bloodstained sample, but
what about those samples that, after centrifugation, have a small but
definite RBC pellet? Is there some way to determine how much bloodstaining
is acceptable (ie protein and glucose have not been elevated by a
clinically significant amount)? And if not, how do labs decide what samples
to accept and reject?
Frank Alvaro
Senior Hospital Scientist
Clinical Chemistry
South Western Area Pathology Service
Sydney, Australia.
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