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Test Code PLT MAP Platelet Mapping Test

Important Note

Must be collected between 09:00 AM - NOON.  Test is available to Berlin Heart patients ONLY - 7 days/wk.

Do NOT use tube system to transport samples, must be hand carried to the laboratory.  Do not agitate the sample.  Testing must be performed within 2 hours of collection.

Clinical System Name

Platelet Mapping Test


None specified


The PlateletMapping™ assay measures the effectiveness of platelet-inhibiting drugs.  The effectiveness of the platelet-inhibiting drugs is then measured on the TEG® analyzer. The results are reported as % inhibition and/or “Net G” which are measures of the clot strength.

Sample Requirements

Specimen: Whole Blood

Container(s):  Lt Blue/Citrate and Dark Green / Sodium Heparin  (No gel separator)

Preferred Vol: 1.8 mL (citrate) and 2.0 mL  (Na heparin)

Minimum Vol: N


Note: Do NOT use tube system to transport samples, must be hand carried to the laboratory. Do not agitate the sample. Testing must be performed with in 2 hours of collection.


Preferred method of collection is venipuncture with vacuum fill.  Test results are affected by incorrect blood volume.  Use of a Vascular Access Device for the  collection of coag testing is not recommended.

If this method is used it requires a 5 cc clearing volume; 3 cc for size 2 French catheter or smaller. Blood must be trasferred to the  Lt Blue/Citrate tube by use of a  blood transfer device to ensure proper fill. 




Processing Instructions

Reject due to: Clotted, Insufficient quantity, and  Improper collection.

Spin :N

Aliquot :N

Temp: RT

Storage location: Core lab Coagulation department.


Note: Deliver blood to Core Coag bench.  Coag Technologist will process. 

Do not centrifuge specimen. Test should be set up  within 2 hours of collection.



Off-site collection: Cannot be collected outside Children's. Contact Laboratory for additional information.


Specimen Type Temperature Time

Whole blood

Lt Blue/Citrate and Dark Green/Sodium Heparin

Room temp 2 h
  Refrigerated N
  Frozen N



STAT Performed TAT
N daily 3 h


Must be collected 9:00 AM - NOON. Test is available to Berlin Heart patients ONLY - 7 days/wk.

Performing Laboratory

Seattle Children's Laboratory    



Department:   Coagulation

Phone Number: 206 987-2578




Reference Range

Reference range determined by provider.


Method: kinetic changes in a sample of citrated whole blood, by the Haemoscope TEG 5000.

Analytical Volume: 1 mL Whole blood


Limitations: Method is affected by  improper handling. Do not use tube system to transport samples. Do not aggitate samples, testing must be performed with in 2 hours.


CPT Codes


Special Instructions

Links to:

Consent Forms




Clinical Utility

Clinical Utility

Critical Values

Not defined for this test.

Send Out Instructions


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