Analytic Time

4 weeks

Soft Order Code
MMLR

Test Updated:

Synonyms

Factor B level by RID
PFB
Complement (C3) Proactivator
Complement (C3) PA
Complement (C3) Activator

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

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Order Kits and Supplies

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

Test FAQ

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Test Overview

Test Methodology

Radial Immunodiffusion

Test Usage

Decreased values are seen when the alternate pathway of complement is activated.

Reference Range

127.6 - 278.5 mcg/mL

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

Specimen Requirements

Collection Offsite

Collect specimen in a lavender top tube. Centrifuge, aliquot plasma into a plastic vial within 1 hour of collection, and freeze.

Lavender Top Tube
Normal Volume
1 mL EDTA plasma
Minimum Volume
0.5 mL EDTA plasma

Billing Information

CPT Code
86160
Pro Fee Code
 
LOINC
 

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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.

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