Apr 2, 2015




Clinical Hub,Tools & Resources,UWHC Lab Test Directory,Hematology


Hematocrit (HCT) Hematology Lab Test

Name: Hematocrit

Test Name: Hematocrit

Health Link Test Code: HCT

LIS Test Code: HCT

CPT Code(s): 85014

Included In: CBC with Differential, CBC without Differential

Methodology: Flow Cytometry and Impedance

Days Performed: Daily, 24 hours.

In-Lab Turnaround Time: 4 hours.

Stat In-Lab Turnaround Time: 1 hour.

Specimen: Blood

Collection Container: K3EDTA-Lavender top

Also Acceptable: K2EDTA-Lavender top, Pink top tube

Collection Volume: 4 mL

Pediatric Collection Volume: 1 mL

Stability Ambient:

8 hours

Stability Refridgerated:

Not acceptable

Stability Frozen:

Not acceptable

Sample Analyzed: Whole Blood

Testing Volume: 1 mL

Pediatric Testing Volume: 0.25 mL in microtainer

Specimen Transport:

Transport specimen to laboratory at ambient temperature.

Unacceptable Criteria:

Clotted specimens are not acceptable. Tubes with <25% of fill volume.


 Age  %
 0 days-29 days  44-70
 30 days-5 months  28-55
 6 months-23 months  32-42
 2-9 years  33-43
 10-17 years, male  36-47
 10-17 years, female  35-45
 18 years and up, male  40-52
 18 years and up, female  34-46


Interpretation Type: Reference Interval

Critical Calls: yes