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HelpTest Code LAB3497 Thromboelastograph, Heparin reversal
Clinical System Name
Thromboelastograph, Heparin reversal
TEG HR
TEG -HR
Synonyms
LAB3497
TEG
Heparin Reversal TEG
TEG, Heparin Reversal
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 it 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 |
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. Heparinase coated cups and pins are used to reverse heparin in the blood.
Critical Values
Not defined for this test.