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HelpTest Code HCT Hematocrit, Blood
Methodology
Sysmex XT4000i
Performing Laboratory
Aspen Valley HospitalSpecimen Requirements
Specimen must arrive within ≤24 hours of draw.
Container/Tube: Lavender-top (EDTA) tube(s) - No other anticoagulant is acceptable.
Specimen: 5 mL (minimum volume: 0.5 mL) of EDTA whole blood
Transport temperature: Ambient
Collection Instructions: Invert 8 times to mix blood.
Reference Values
Males0 days-1 month: 42-70%
1 month-2 years: 30-41%
2-10 years: 33-43%
10-18 years: 36-47%
≥18 years: 40-54%
Females
0 days-1 month: 42-70%
1 month-2 years: 30-41%
2-10 years: 33-43%
10-18 years: 35-45%
≥18 years: 38-47%
Critical values (automatic call-back)
0 days-1 month: <25% or >70%
≥1 month: <25% or >60%