Fibrinogen Antigen, Nephelometry

Test Code

37801

CPT Codes
85385

Preferred Specimen

1 mL plasma collected in a 3.2% sodium citrate (light blue-top) tube

Patient Preparation
Overnight fasting is required

Minimum Volume

0.5 mL

Transport Temperature

Refrigerated (cold packs)

Specimen Stability

Room temperature: Unacceptable
Refrigerated: 8 days
Frozen: 90 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Hemolysis • Lipemia

Methodology
Nephelometry

Setup Schedule

Set up: Mon-Sat; Report available: 1-3 days

Reference Range

180-350 mg/dL

Clinical Significance

Low levels of fibrinogen are associated with bleeding most commonly secondary to liver disease or disseminated intravascular coagulation (DIC). Fibrinogen is an acute phase reactant and thus elevated levels may be associated with inflammation. Increased concentrations are also associated with increased risk of atherosclerosis.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.