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Test Code LAB1122 Thromboelastograph

Important Note

Call the Laboratory at x72561 before ordering or sending this test to ensure timely results.

 

For patients on heparin, please order Thromboelastograph, Heparin Reversal instead.

Clinical System Name

Thromboelastograph

Synonyms

LAB1122

TEG
-TEG
Thromboelastograph

Sample Requirements

Specimen: Whole Blood

Container(s):  Lt. Blue/Citrate

Required Vol: one 1.8 mL tube or one 2.7 mL tube (do NOT over or under fill)

Minimum Vol: N

 

Note: Cannot be shared with other coagulation tests. Testing must be performed within 30 minutes 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 mL waste volume; 3 mL for size 2 French catheter or smaller. Blood must be transferred 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 (under fill) or Overfill, and Improper collection.

Spin :N

Aliquot :N

Storage location: Core 5 Fridge

 

Note: Deliver blood to Core Heme bench and place in the TEG rack. Coag Technologist will process. 

Do NOT centrifuge specimen. Test should be set up within 30 minutes of collection.

 

 

Off-site collection: Cannot be collected outside Children's Main Campus. Do NOT collect at Seattle Children's Regional Clinic locations. Contact Laboratory for additional information.

Stability

Specimen Type Temperature Time

Whole blood

Lt Blue/Citrate

 Room temp ≤30 minutes
  Refrigerated N
  Frozen N

 

Availability

STAT Performed TAT
Y daily 3 h

 

Performing Laboratory

Seattle Children's Laboratory    

 

Department

Department:   Coagulation

Phone Number: 206 987-2617 (Client Services)

 

 

 

CPT Codes

85390

Methodology

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 failure to perform test within 30 minutes of blood draw.

 

OR personnel: If you are going to run TEG application, you must be part of the TEG-C security group in IS. If you are not part of this group, when you try to launch the application you will receive errors. Have someone known to be part of this group (anesthesiologist) log on to the pc with their network username and password. Once logged on to the pc, the TEG application should then launch successfully and you should be able to log into the application without experiencing any errors.

Reference Range

K TEG 2.0 - 6.0 minutes
MA 52 - 70 mm
ANGLE 55 - 74 degrees
LY30 0.0 - 8.0%
Cl -3.0 - +3.0

 

Critical Values

Not defined for this test.

Description

The TEG analyzer monitors shear elasticity; a physical property of a blood clot. A computer monitors the resulting data and calculates the curve dynamics. The overall profile can be qualitatively and /or quantitatively interpreted in terms of a HYPO, NORMAL, or HYPER coagulable state of the sample.