Days Set Up
Tuesday, Friday
Analytic Time

1 day

Soft Order Code

Test Updated:


Factor 7 Antigen
Factor VII Antigen

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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


Test Usage

Research Use Only.

Reference Range

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

Specimen Requirements

Collection Onsite

Collect specimen in blue top (citrate) tube. If the specimen is drawn into a plastic Vacutainer® tube, then the tube should be gently inverted no more than three or four times; excessive mixing will activate platelets and affect the test result. Specimen should arrive at lab within 2 hours of collection; transport at room temperature.

Collection Offsite

Collect specimen in blue top (citrate) tube. Centrifuge, aliquot plasma into a plastic vial, and freeze the specimen within 2 hours of collection. Transport frozen specimen on dry ice. Proper collection and handling of specimens is critical; see Coagulation tab of the handbook to ensure that the proper technique is used.

Blue Top Tube
Normal Volume
Full 2.7 mL tube or 1 mL plasma aliquot
Minimum Volume
Full 1.8 mL tube or 1 mL plasma aliquot

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.