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Hematocrit, spun

Item Value
Approval req'd? No
Available Stat? Yes
Test code HCTM
Performed by Parnassus & Mission Bay Hematology
In House Availability 24 hours a day seven days a week
Method Centrifugation
Collection Instructions Collect from finger or heel skin puncture or fill tubes from well mixed syringe or vacutainer sample
Container type Microhemtocrit tube
Amount to Collect Full microhematocrit tubes x2
Sample type Whole blood
Preferred volume Full microhemtocrit tubes x2
Min. Volume 3/4 full microhematocrit tubes x2
UCSF Rejection Criteria Microhematocrit tubes received unsealed or sealed at both ends.
Units %
Normal range
0-7 days 45-67%
8-14 days 42-66%
2-4 weeks 39-63%
1-2 months 31-55%
2-3 months 28-42%
3-6 months 29-41%
6-24 months 33-39%
2-5 years 34-40%
5-12 years 35-45%
Male 12-15 years 37-49%
Male 15-18 years 38-49%
Male > 18 years 41-53%
Female > 12 years 36-46%
Critical value < 25% or > 65%
Synonyms Hct; Crit; PCV; Packed cell volume; microhematocrit
Additional information There are several variables which may result in inaccuracies in the measurement of a spun hematocrit and it's use should be restricted to infants where the sample volume is more suitable.

Hemoglobin is a much more accurate and stable parameter in assessing patients for anemia and provides a better indication of oxygen carrying capacity.
CPT coding 85013
LOINC code 4545-0
Last Updated 6/20/2016 2:53:47 PM
Entry Number 1155
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