Heparin, Quantitative (anti-Xa for unfractionated heparin)

Light Blue Top Tube

Tube Type

Test ID LAB317
CPT Code(s) 85520
Group/Individual Test Individual
Laboratory Core Laboratory
Tube Station 30 Routine: 888 STAT
Specimen Routine: 2.7 mL Blood/Light Blue Top Tube; See Comments
micro: 1.8 mL Blood Pediatric Light Blue Top Tube
Room temperature: 4 hours
Unspun: 1 hour
Frozen: 14 days (platelet poor plasma only)
Availability Routine: 24 hr/day
Turnaround Time Stat: 90 min; Routine: 3 hrs
Reference Range 0.3-0.7. For therapeutic range see Anticoagulant Monitoring Testing Guidelines under Laboratory Test Information on McLendon Lab's Website or contact the Heme/Coag Consult pager for the Hematology/Oncology service.
Comment Full light blue top tube. Deliver Immediately. Draw tube must be allowed to fill completely. Short draws will be rejected.

Reviewed by Christopher Parker on November 11, 2021

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514