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HelpHIT-Ab (PF4-H)
Additional Codes
LAB29247
Performing Laboratory
MBMC Main Laboratory
Methodology
Latex enhanced immunoassay for the detection of anti-platelet factor 4/heparin (PF4-H)
Testing Algorithm
For positive HIT Antibody samples, a Serotonin Release Assay will reflex.
Specimen Requirements
Specimen is stabile for 8 hours at ambient temperature.
Specimen Type: Plasma
Container/Tube: 2.7-mL, light-blue top (3.2% sodium citrate)
Specimen Volume: Full tube
Specimen Minimum Volume: Fill to frosted minimal fill line on the tube.
Collection Instructions: It is imperative that the tube be completely filled to maintain the proper ratio of blood to anticoagulant.
Day(s) Test Set Up
Monday through Sunday
Turnaround Time:
STAT: 1 hour after receipt in laboratory
Routine: within 4 hours
Reference Values
HIT antibody: Negative
Test Classification and CPT Coding
86022
additional 86022, if appropriate
Stability
8 hours Ambiant temperature