Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  

P2Y12 INHIBITOR REACTIVITY (CLOPIDOGREL), VERIFYNOW

ORDERING INFORMATION:
Geisinger Epic Procedure Code: LAB2799         Geisinger Epic ID: 43810

SPECIMEN COLLECTION
Specimen type:
 Whole blood
Preferred collection container:
Specimen required:
Two 2mL Greiner blue-top/white-ring tubes of whole blood are required for each test.
Special notes:
 Do not centrifuge specimen. Do not place tube in pneumatic tube system. Draw order should be maintained, draw this tube prior to any other anticoagulant or additive tubes. Do Not Refrigerate or freeze tube. Specimen stable for only 4 hours. If drawing Verify Now Aspirin analysis, specimen needs to be drawn in a separate tube.
SPECIMEN PROCESSING
Specimen processing instructions:
If drawing Verify Now Aspirin analysis, specimen needs to be drawn in a separate tube. 
Transport temperature:
 Room temperature.
Specimen stability:
 4 hours.
Rejection criteria:
 Overfilled tube, underfilled tube, stability limit exceeded, tube system use, centrifugation of whole blood.
TEST DETAILS
Reference interval:
 182-335 PRU (P2Y12 reaction units)
Interpretation guide:
  1. Aspirin- Effective drug use will manifest in a reading of ARU below the normal range.
  2. P2Y12 Inhibitors - Effective drug use will manifest in a reading of PRU below the normal range.
  3. Results lower than the low reference range (182) are highly specific for a P2Y12 Inhibitor effect.
  4. A time of dosing effect was noted on the validation studies. If the sample was drawn 12 hours after administration of the medication, a normal PRU test will be observed.
CPT code(s):
 85576
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
 Plavix, InhibP
Methodology:
Whole Blood Aggregation
Synonyms:
Plavix test, Inhibition of plavix
PFPLAV, VERIFY P2Y12
Clinical significance:
Plavix or similar drugs are used as an anticoagulant prior to surgery. Effective drug use will result in a lower answer than the reference range. Resistance is seen in a small number of patients and will manifest as a normal value with drug usage confirmed.
Doctoral Director(s:)
Michelle Grant DO    
Review Date: 04/29/2019

Performing Locations

Geisinger Medical Center

Performing laboratory: Coagulation
Technical Lead: Margaret Knowles-Tuchman
Frequency: Daily, all shifts
Performed stat? Yes

Geisinger Wyoming Valley Medical Center

Performing laboratory: Coagulation
Technical Lead: Julia Bell    
Frequency: Daily, all shifts    
Performed stat? Yes

Geisinger Community Medical Center

Performing laboratory: Hematology
Technical Lead: Renee Bordo, Robert Furcon  
Frequency: Daily, all shifts    
Performed stat? Yes

Geisinger Lewistown Hospital

Performing laboratory: Coagulation
Technical Lead: Lisa Sheaffer  
Frequency: Daily, all shifts    
Performed stat? Yes
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