Days Set Up
Daily, 24 hours
Analytic Time

Typically 30 minutes. Analytic time can be physician determined for individual cases.

MiChart Code
Rotem Testing, Initial
Soft Order Code

Test Updated:



Looking to order a test?

We’ve provided helpful links to make ordering easy.

Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology

The Rotem system uses Thromboelastometric analysis to provide a quantitative and qualitative indication of the coagulation state of a blood sample that can detect clot formation and firmness as well as clot lysis.

Test Usage

Coagulation evaluations with the ROTEM® delta are commonly used to assess clinical conditions in organ transplantation, cardiovascular surgery, cardiology procedures and trauma to assess post-operative hemorrhage and/or thrombosis.

Reference Range

Interpretive report provided.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite

[list order=Y]
Collect venous blood in a Blue top 3.2%sodium citrate Vacutainer® tube. If the blood must be drawn through a VAD (vascular access device), the line should be flushed with 5 mL of saline and the first 5 mL of blood or six dead space volumes of the VAD discarded.
Complete the requisition form available at [bold][mark color=green]… [/bold] as follows:
Interpreting clinician name and ID/pager number
Check the test code
Check the specific desired test stop time in minutes
Fill out the main contact for pathology to call with questions
Hand deliver the sample at room temperature with the completed requisition to the Hematology/Coagulation lab on the 2nd floor Main Hospital, Rm# 2F360.
[new line]
[underline] Instruction for Phlebotomy Out Patient blood draw station:[/underline]
When patient arrives with Rotem requisition from the physician, ONE click in MiChart will generate patient demographic label.
Soft order code – 1BLUE in soft Order Entry, and correct ordering physician from the requisition.
Draw 1 Blue top 3.2% sodium citrate Vacutainer® tube.
Write date and time of collection on the requisition.
Immediately Walk sample along with the requisition to Hematology/Coagulation lab on the 2nd floor Main Hospital, Rm# 2F360

Collection Offsite

This test is available only to University of Michigan registered patients.

Normal Volume
Full 2.7ml blue top 3.2% sodium citrate Vacutainer® tube, venous draw only
Minimum Volume
Full 1.8ml blue top 3.2% sodium citrate Vacutainer® tube, venous draw only

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.