Activated Protein C Resistance

Light Blue Top Tube

Tube Type

Test ID LAB8005
EPIC Order ACTIVATED PROTEIN C RESISTANCE
CPT Code(s) 85307
Group/Individual Test Group
Laboratory Special Coagulation
Tube Station 30
Specimen Routine: 3.0 mL blood/light blue sodium citrate tube; See Comments
Stability



 Unspun:
4 hours
Room Temp:
4 hours
Refrigerated:
Not acceptable
Frozen:
6 months
Availability Routine: 2 runs/week; Monday and Thursday
Turnaround Time 3-5 Business Days
Internal Reference Testing
& Outreach Handling Specimens		 Platelet poor (double-spun) plasma. Aliquot and freeze within 4 hours.
Reference Range                                      Normal: APCR Ratio >2.21
Comments Deliver Immediately
Heparin >1U/mL Interferes with this Assay

Reviewed by J. Carr on February 03, 2026

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