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HelpTest Code HCRT Hematocrit (HCT) LAB289
Performing Laboratory
UnityPoint Finley Hospital
Test Method
Sysmex XN Systems:
Measured as ratio of the total RBC volume to whole blood using cumulative pulse height detection.
Performance
Testing is performed Monday through Sunday.
Routine orders: Typically completed within 2 hours upon receipt in the lab.
STAT orders: Typically completed within 30 minutes upon receipt in the lab.
Specimen Requirement
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 ul (bottom line) to be acceptable for testing.
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.
Reference Values
Hematocrit
| sex | age range | expected range | critical low | critical high |
| M & F | 0-15 days | 41-65 % | ||
| M & F | 15 days-1month | 33-55% | ||
| M & F | 1-2 month | 28-42% | ||
| M & F | 2-4 month | 32-44% | ||
| M & F | 4-6 month | 31-41% | ||
| M & F | 6-9 month | 32-40% | ||
| M & F | 9 month-1 year | 33-41% | ||
| M & F | 1-3 year | 32-40% | ||
| M & F | 3-6 year | 32-42% | ||
| M & F | 6-9 year | 33-41% | ||
| M & F | 9-12 year | 34-43% | ||
| M | 12-15 year | 35-45% | ||
| F | 12-15 year | 34-44% | ||
| M | 15-18 year | 37-48% | ||
| F | 15-18 year | 34-44% | ||
| M | 18-45 year | 39-49% | ||
| F | 18-45 year | 35-45% | ||
| M | 45-65 year | 39-50% | ||
| F | 45-65 year | 35-47% | ||
| M | ≥ 65 year | 37-51% | ||
| F | ≥ 65 year | 35-47% |
CPT Code Information
85014 Blood Counts: complete (CBC), with automated differential WBC count, hematocrit