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HelpTest Code HCRT Hematocrit (Hct), Blood, LAB289
Performing Laboratory
St. Luke's Hospital Cedar Rapids
Specimen Requirements
Container/Tube: Lavender-top (EDTA) tube
Specimen: Whole blood anticoagulated with EDTA is preferred. A minimum draw of 1 mL is required for sampler analysis in a 5 mL EDTA tube (evacuated to draw 2.5 mL) to minimize the dilution effect of excess liquid anti-coagulant. An EDTA microtainer filled above the 250 mL line is adequate for testing in the open mode.
Transport: Room temperature to arrive within 24 hours
Reference Values
|
MALE |
FEMALE |
||
|
AGE |
NORMAL |
AGE |
NORMAL |
|
0-14 days |
39.8-53.6 |
0-14 days |
39.6-57.2 |
|
15-30 days |
30.5-45.0 |
15-30 days |
32.0-44.5 |
|
1 month – 2 months |
26.8-37.5 |
1 month – 2 months |
27.7-35.1 |
|
3 months – 5 months |
28.6-37.2 |
3 months – 5 months |
29.5-37.1 |
|
6 months – 23 months |
30.8-37.8 |
6 months – 23 months |
30.9-37.9 |
|
2-5 years |
31.0-37.7 |
2-5 years |
31.2-37.8 |
|
6-11 years |
32.2-39.8 |
6-11 years |
32.4-39.5 |
|
12-17 years |
33.9-43.5 |
12-17 years |
33.4-40.4 |
|
≥18 years |
40.0-52.0 |
≥18 years |
35.0-47.0 |
Critical values
0-14 days: <30.0% or >70.0%
15-30 days: <24.0% or >70.0%
>30 days: <21.0% or >60.0%
Day(s) Test Set Up
Monday through Sunday
Methodology
Hematocrit (HCT) is measured as a ratio of the total RBC volume to whole blood using cumulative pulse height detection.
Test Classification and CPT Coding
85014
Analytical Time
Within 30 minutes of specimen arrival
Report Available
STAT within 1 hour of receipt. Routine within 2 hours of receipt.