Complete Blood Count, Hematocrit
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Packed cell volume (PCV), Hct.
To evaluate anemia, polycythemia, and hydration status and to monitor therapy.
Whole blood from one full lavender-top (EDTA) tube, Microtainer, or capillary. Whole blood from a green-top (lithium or sodium heparin) tube may also be submitted.
(Method: Automated, computerized, multichannel analyzers)
|Age||Conventional Units (%)||SI Units (Conventional Units × 0.01) (Volume Fraction)|
|7 mo–1 yr||31–43||0.31–0.43|
|2nd and 3rd Trimester||28–33||0.28–0.33|
|Values are slightly lower in older adults.Reference range values may vary between laboratories.|