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Test Code HCT Hematocrit, Blood

Specimen Requirements

Draw blood in a lavender-top (EDTA) tube(s), and send 3 mL of EDTA whole blood refrigerated.

Note:  Specimen may be stored refrigerated up to 56 hours. However, storage >24 hours may result in falsely elevated hematocrit results.

Specimen Stability

Room temp -      24 hours

Refrigerated -     48 hours

Performing Laboratory

Conway Regional Clinical Laboratory Services

Reference Values

Males
0-7 days:  42.0-63.0%
≥7-14 days:  39.0-63.0%
≥15-31 days:  31.0-55.0%
≥1-2 months:  28.0-42.0%
≥3 months-2 years:  33.0-39.0%

≥3-6 years:  34.0-40.0%

≥7-12 years:  35.0-45.0%

≥13-17 years:  37.0-49.0%

≥17-18 years:  40.0-54.0%

≥18 years:  37.0-52.0%
Females
0-7 days:  42.0-63.0%
≥7-14 days:  39.0-63.0%
≥15-31 days:  31.0-55.0%
≥1-2 months:  28.0-42.0%
≥3 months-2 years:  33.0-39.0%

≥3-6 years:  34.0-40.0%

≥7-12 years:  35.0-45.0%

≥13-17 years:  36.0-46.0%

≥17-18 years:  35.0-47.0%

≥18 years:  34.0-46.0%

Critical values (automatic call-back)

Newborns:  >64.0%

Adults:  <20.0% or >60.0%

Methodology

Flow Cell/Impedance

Day(s) Test Set Up

Monday through Sunday

Available STAT

Test Classification and CPT Coding

85014