Blood Smear Review
Purple top ( EDTA ) tube: Whole Blood
0.3 mL and 2 fresh peripheral smears
Cause for rejection:
Specimens which are hemolyzed, clotted, diluted with IV fluid, or collected in heparin.
Daily, 24 hours
Microscopic evaluation of Wright's stained blood film
A differential from whole blood cannot be done on a specimen held more than 4 hours at room temperature or more than 8 hours refrigerated. On microsamples, the specimen cannot be used when it is more than 4 hours old.
Reference range is available on patient report