VerifyNow P2Y12 Assay

General Information

Lab Name
VerifyNow P2Y12 Assay
Lab Code
VERP2Y
Epic Name
VerifyNow P2Y12 Assay
Description

Results could be affected by the following: GPIIb/IIIa inhibitors, low HCT, low PLT or inherited platelet disorders. Patients with HCT<20% or PLT<50 K/uL cannot be tested with the VerifyNow Assay. Suggested timing for testing patients on P2Y12 inhibitory drugs is dependent on dosage given.

VerifyNow P2Y12 Suggested Sample Draw Time:

Medications Tested Dose Given Suggested Sample Draw Time
Clopidogrel (Plavix) 75 mg 7 days on maintenance
Clopidogrel (Plavix) 300 mg 8 hours post bolus
Clopidogrel (Plavix) 600 mg 6 hours post bolus
Prasugrel (Effient) 5 mg 5 days on maintenance
Prasugrel (Effient) 10 mg 5 days on maintenance
Prasugrel (Effient) 60 mg 45 minutes post bolus
Ticagrelor (Brilinta) 90 mg (bid) 1 day on maintenance (within 8 hours of last dose for maximal effect)
Ticagrelor (Brilinta) 180 mg 2 hours post bolus (within 8 hours for maximal effect)

Do not test patients who have taken a GP llb/llla inhibitor tirofiban (Aggrastat®) or eptifibatide (Integrilin®) within two days, or abciximab (ReoPro®) within two weeks. Depending on the amount of GP IIb/IIIa inhibitor present in the sample, P2Y12 results may be markedly shortened or Error/Attention code may be displayed.

Synonyms
clopidogrel, Effient, Efient, Plavix, prasugrel, Ticlid, ticolpidine, Verify Now, VerifyNow PRU
Components

Interpretation

Method

VerifyNow System

Reference Range
See individual components

Ordering & Collection

Specimen Type
Blood
Collection

Peripheral draw recommended. Special collection tubes required. Call HMC Laboratory at 206-744-3451 to obtain Greiner citrate tubes.

Draw 2 mL blood into each of the two Greiner citrate tubes (must fill to the proper level).

Handling Instructions

Sample handling is critical for this assay. Carry specimen to laboratory at room temperature within 3 hours of collection. DO NOT SEND SAMPLES IN PNEUMATIC TUBE SYSTEM. Samples received by pneumatic tube will not be accepted.

Quantity
Requested: entire tube
Minimum: 2 mL whole blood

Processing

Receiving Instructions

UW-MT Instructions: Send specimens at room temperature to HMC within 3 hours of sample collection.

HMC Instructions: Take to HMC Hematology immediately.

Outside Laboratories: Deliver specimens at room temperature directly to HMC within 3 hours of sample collection.

Misc Sendout

Performance

Lab Department
Hematology(H)
Frequency
Daily
Available STAT?
Yes
Performing Location(s)
HMC Hematology
206-520-4600

325 9th Ave, Rm # GWH-47, Seattle, WA 98104-2420

Billing & Coding

CPT Codes
85576
LOINC
49010-2
Interfaced Order Code
UOW2126