Fibrinogen antigen

Alphabetical Test listing

Fibrinogen antigen-994

Test name:

Fibrinogen antigen

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

Factor I antigen
Fibrinogen level

Useful for:

Diagnosis of homozygous and heterozygous fibrinogen deficiency as well as dysfibrinogenemia
Diagnosis of disseminated intravascular coagulation
Fibrinogen levels can be used to assess the effectiveness of thrombolytic therapy

Specimen type:

EDTA plasma

Collection container:

Lavender (EDTA), 4mL

Volume:

1.0 mL

Minimum volume:

0.5 mL

Collection instructions:

Immediatley following collection, mix sample thoroughly by gently inverting 8 - 10, times to prevent clotting

Processing instructions:

Spin within two (2) hours of sample collection
Transfer plasma to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp), labelled as EDTA plasma
Freeze within 24 hours of sample collection

Transport container:

Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)

Alternate specimen type:

Sodium citrate (Na cit) plasma (3.2%)

Alternate collection container:

Lt blue Sodium citrate (NaCit)

Transport and stability:

Frozen (preferred) - 1 year

Refrigerated - 8 days

Reason for rejection:

Microbially contaminated samples
Hemolysis
Gross lipemia that cannot be cleared by ultracentrifugation
Serum

Performing lab:

LabCorp Burlington (117052): R-NX

Days set up:

Mo - Fr

TAT:

3 - 6 days

Method:

Immunonephelometry

Reference ranges:

Age	Male (mg/dL)	Female (mg/dL)
0 - 1 year	116 - 349	116 - 349
2 - 5 years	176 - 354	189 - 395
6 - 17 years	191 - 416	191 - 416
18 - 50 years	206 - 478	206 - 478
>50 years	233 - 496	233 - 496

Results that require action (critical):

<80 mg/dL or >999 mg/dL

CPT codes:

85385

LOINC code:

Result 42772-4

Date created:

05/20/2019

Revised date:

12/17/2025

Review date:

12/17/2025