Can we check CRP levels in stored serum ?

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Kwok-Hung Sit

CRP half life is 19 days, i.e. stable for more than 2 weeks.

Nina Petkova

CRP specimens are stable for 2 weeks at 4C, for longer time they shuold be freezed at -20C, but false results are possible.

Angela Ufele

It depends on the period of storage. The CRP half life is 19 days but under the temperature of 4oC. My suggestion is this; if can lay your hands a fresh serum, please use that for accurate result.