A 20-year-old female asked:
Would donating blood 1-2 weeks before before having a cbc test done interfere with the results of the test?
1 doctor answer • 4 doctors weighed in
Pediatrics 48 years experience
Could: Your hematocrit and hemoglobin may be slightly lower after donating a unit of blood--up to three percentage points for the hematocrit to be lower--but after 1-2 weeks, your system would almost be back to baseline. Thanks for donating!
3.7k viewsReviewed >2 years ago
Last updated Nov 27, 2017
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