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Test Code HCRT Hematocrit (HCT) LAB289

Test Method

Sysmex XN Systems:

  • HCT: Measured as ratio of the total RBC volume to whole blood
    using cumulative pulse height detection.

Specimen Requirement

EDTA whole blood is required.

Reference Values

Hematocrit:

0-15 days Male and Female: 41-65%

15 days-1 month Male and Female:
33-55%

1-2 months Male and Female: 28-42%

2-4 months Male and Female: 32-44%

4-6 months Male and Female: 31-41%

6-9 months Male and Female: 32-40%

9 months-1 year Male and Female:
33-41%

1-3 years Male and Female: 32-40%

3-6 years Male and Female: 32-42%

6-9 years Male and Female: 33-41%

9-12 years Male and Female: 34-43%

12-15 years:

Male: 35-45%

Female: 34-44%

15-18 years:

Male: 37-48%

Female: 34-44%

18-45 years:

Male: 39-49%

Female: 35-45%

45-65 years:

Male: 39-49%

Female: 35-47%

≥ 65 years:

Male: 37-51%

Female: 35-47%

Performance

Testing is performed Monday through Sunday.

Routine orders: Typically completed within 4 hours after the
specimen arrives at the testing site.

Expedite orders: Typically completed within 1 hour after the
specimen arrives at the testing site.

STAT orders: Typically completed within 30 minutes after
the specimen arrives at the testing site.

CPT Code Information

85014 Blood Counts: complete (CBC), with
automated differential WBC count, hematocrit

LOINC Code Information

58410-2 Complete Blood Count (Hemogram) Panel-Blood By Automated
Count

Useful For

Screening tool to confirm a hematologic disorder.

Establish or rule out a diagnosis.

Detect an unsuspected hematologic disorder.

Monitor effects of radiation or chemotherapy.

These counts are used as clinical guides in the diagnosis and/or
monitoring of many diseases.

Additional Specimen Collection Information

Whole blood collected in EDTA purple-top tube. The
tube must be at least one quarter full to be acceptable for
testing.

Capillary specimen collected in EDTA microtube. The 
tube must contain at least 375 mcl (bottom line) to be
acceptable for testing.