Days Set Up
Analytic Time

2 - 7 days

Soft Order Code

Test Updated:


Kininogen, High Molecular Weight
Fitzgerald Factor
HMW Kininogen

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All specimens should be accompanied by a requisition.

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

Test FAQ

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Test Overview

Test Methodology


Test Usage

Detection of coagulation factor deficiency.

Reference Range

65 - 135%

* 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.

Collection Offsite

Collect specimen in blue top (citrate) tube. Centrifuge, aliquot plasma into two (2) plastic vials (1 mL each), 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
2 mL plasma (two 1 mL aliquots)
Minimum Volume
1 mL plasma

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.