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| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Hematocrit
Test Code509
CPT Codes
85014
Preferred Specimen
Whole blood from a full EDTA (lavender-top) tube
Minimum Volume
Microtainer 0.5 mL • 1 mL whole blood EDTA tube
Other Acceptable Specimens
Whole blood from a full EDTA (tan-top) tube
Instructions
Maintain specimen at room temperature. Do not refrigerate. If multiple draw, collect EDTA (lavender-top) tube last. Traumatic draw can introduce thromboplastin and trap WBC and platelets. Refrigeration can precipitate fibrin and trap WBC and platelets.
Note: If drawn with lead testing, EDTA (tan-top) is required.
Note: If drawn with lead testing, EDTA (tan-top) is required.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 48 hours
Refrigerated: 48 hours (may cause platelet clumping)
Frozen: Unacceptable
Refrigerated: 48 hours (may cause platelet clumping)
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis • Clotted • Received frozen
Methodology
Electronic Cell, Sizing/Cytometry/Microscopy
Setup Schedule
Set up: Mon-Sat; Report available: Next day
Reference Range
| ≤2 Weeks | 42.0-65.0 % | |
| 1 Month | 33.0-55.0 % | |
| 2 Months | 28.0-42.0 % | |
| 6 Months | 29.0-41.0 % | |
| 2 Years | 31.0-41.0 % | |
| 6 Years | 34.0-42.0 % | |
| 12 Years | 35.0-45.0 % | |
| Male | Female | |
| 18 Years | 36.0-49.0 % | 34.0-46.0 % |
| >18 Years | 38.5-50.0 % | 35.0-45.0 % |
Clinical Significance
Usual method for determining anemia. Used to calculate indices.
