Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

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


Geisinger Epic Procedure Code: LAB3774         Geisinger Epic ID: 140937

Specimen type:
Whole Blood
Preferred collection container:
Alternate Collection Container:
Other size blue-top (3.2% sodium citrate) tubes (e.g., 1.8 mL, 4.5 mL)
Specimen required:
One (1) full 2.7 mL light blue top (3.2% sodium citrate) tube of whole blood.
Special notes:
Test may only be collected and performed at testing laboratories (see below). Geisinger providers only: TEG Manager. A platelet count and fibrinogen level must be ordered along with the TEG for interpretation of results. Avoid contaminating the sample with tissue thromboplastin or heparin. Venipuncture must be performed with no trauma. If blood is drawn from an indwelling catheter, flush with 5 mL of saline and discard the first 5 mL of blood collected. If blood is drawn with a butterfly device, draw a discard tube first to remove air from tubing.

Specimen processing instructions:
Deliver to laboratory immediately after collection. Do not refrigerate or freeze sample. Do not send sample through the pneumatic tube system. 
Transport temperature:
Room temperature. Do not refrigerate or freeze sample.
Specimen stability:
Stable 2 hours at room temperature.
Rejection criteria:
Clotted, overfilled or underfilled specimen. Stability limits exceeded. Sample sent through pneumatic tube system.

Reference interval:
R 2.5-8.3 min.
K 0.5-3.7 min.
Angle 46.8-78.4 degrees.
MA 50.6-72.5 mm.
LY 30 0–7.5%.
Additional information:
FDA approved for microvascular bleeding assessment only. Notify laboratory if interpretation data is requested. Geisinger providers only: TEG Manager.
CPT code(s):
85347, 85576, 85384
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:
Thromboelastographand thromboelastograph), Heparinase. R, MA, K, ANGLE, LY30, and CI
Clinical significance:
The thromboelastograph (TEG) is FDA-approved for microvascular bleeding asessesment only. It is commonly used to assess postoperative hemorrhage and/or thrombosis during and following cardiovascular surgery, organ transplantation, trauma and cardiology procedures.
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: ATL+
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    
Performed stat? Yes
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