Heparin Induced Thrombocytopenia Reflexive Panel
General Information
- Lab Name
- HIT Reflexive Panel
- Lab Code
- HITRP
- Epic Ordering
- HIT Reflexive Panel
- Description
Reflex to Serotonin Release Assay (code: RSRAG, with additional billing) ONLY when Heparin Induced Platelet Antibody [code: HIPA] is positive or strong positive.
Assay interference: heparin at a level of >1.0 IU/mL in a test sample will interfere with the HIPA assay and will cause false negative results.
- Synonyms
- Heparin Induced Antibody, Heparin-PF4 antibody, HIT antibody, HIT Elisa, PF4 Heparin Antibody, Serotonin Release Assay
- Components
-
Code Name HITRI HIT Reflexive Panel Info HIPA Heparin Induced Platelet Antibody HITOD Heparin Induced Platelet Optical Density HITRS SRA Reflex Status
Interpretation
- Reference Range
- See individual components
Ordering & Collection
- Specimen Type
- Blood in Citrate Tube (Light Blue Top tube)
- Collection
-
Collect both 3 mL BLUE TOP (CITRATE) tube AND 10 mL RED TOP (plain) tube
BLUE TOP Citrated tube needs to be completely filled, the ratio of blood to anticoagulant is critical for valid coagulation results. After the tube has been filled with blood, immediately invert the tube gently several times to prevent coagulation or formation of clots.
- Handling Instructions
Lab must process specimens within 6 hours of collection
- Quantity
-
requested: Processed Sample: 1 mL plasma AND 3 mL of Serum
minimum: 0.5 ml Plasma AND 1mL of Serum
Processing
- Processing
Take BLUE TOP specimen to Coag to process.
Centrifuge RED TOP and separate serum from CLOT within 6 hours. Send serum to UW Coag Lab for refrigeration.
HMC SPS: send HITRP samples to UW Coag Lab using Delivery Express between 9 - 11 am. After 11 am and before noon call LMR to approve sending HITRP as STAT to UWMC-ML.
Outside Laboratories: Centrifuge BLUE Top Tube for 10 minutes, remove plasma and respin plasma for another 10 minutes. Remove plasma within 6 hours of collection.
Freeze plasma (minimum 0.5 mL) @ -20°C to -80°C. Send Frozen on dry ice.
Performance
- LIS Dept Code
- Coagulation (COAG)
- Performing Location(s)
-
UW-MT Coagulation
206-520-4600Clinical Lab, Room NW220,
University of Washington Medical Center,
1959 NE Pacific street, Seattle, WA 98195 - Frequency
- DailySamples arrive at UW-MT Coagulation lab before or by noon will be run same day.Serotonin Release Assay will be sent out ONLY if HIPA is POS or Strong POS.
- Available STAT?
- with Lab Medicine Resident approval only
Billing & Coding
- CPT codes
- 86022
- LOINC
- 34701-3
- Interfaced Order Code
- UOW3361