The University of Iowa (UIHC)
Department of Pathology
LABORATORY SERVICES HANDBOOK

Thromboelastograph
Order Code: TEG
Epic Lab Code: LAB5831
Order Form: A-1a Miscellaneous Request or Epic Req 		  Hemostasis/Thrombosis
6240 RCP
356-3573 
Specimen:
 
Whole Blood
Collection Medium:
Light Blue top tube (Na Citrate) 


Minimum:


Full draw of 2.7 mL Light Blue Sodium Citrate tube


Delivery Instructions:


Deliver to laboratory immediately after collection.


Testing Schedule:


24 hrs/day, 7 days a week, including holidays.


Analytic Time:


2 hours (upon receipt in laboratory)


Reference Range:


R:  2 - 8 minutes
K:  1 - 3 minutes
Angle:  55 - 78 degrees
MA:  51 - 69 mm
LY30:  0 - 8 %


Comments:


This test needs a separate tube!  It CANNOT be performed with any other 
coagulation tests.


Methodology:


A stationary pin attached to a torsion wire is immersed into whole 
blood.  When the first fibrin forms, it begins to bind the cup and pin, 
causing the pin to oscillate in phase with the clot.  A 
mechanical-electrical transducer converts the rotation movement of the 
pin to an electrical signal which is monitored by a computer.


CPT Code:


85347, 85384 (x2), 85390, 85576




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Updated: 03/03/2009

Note: The information contained in this handbook is  
            for use by personnel of University of Iowa Health Care. 
            No other use is implied or intended.