From UAB Coagulation Service (http://coag.path.uab.edu)
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Factor V Activity Assay
| Primary Name |
Factor V Assay |
| Synonym |
Factor V Functional Assay |
| Synonym |
Occasionally confused with the factor V Leiden mutation test |
| Contraction |
FV |
| Contraction |
-- |
| Contraction |
-- |
| UAB Procedure Number |
2500290 |
| CPT Code |
85220 |
| Specimen |
Collect one (1) blue-stopper tube (3.2% sodium citrate), filled to specified volume. Do not underfill or overfill. |
| Specimen Management |
Note time of collection and time of last treatment if applicable. Centrifuge blue-stopper tube within 1 hour of collection, separate plasma and test or quick-freeze at -70°C. |
| Specimen Accepted |
Daily including weekends |
| Times Available |
0730-1600; deliver to lab by 1300 for same-day results |
| Test Performed |
Monday-Friday. |
| Available Stat? |
Pathologist's approval required. |
| Description |
Congenital factor V deficiency is rare and is inherited as an autosomal recessive mutation. Acquired factor V deficiency is seen in liver disease, disseminated intravascular coagulation, and due to acquired inhibitors. Factor V deficiency is associated with mild to moderate bleeding. |
| Reference Interval |
50-150% |
| Critical Value |
-- |
| Therapeutic Range |
-- |
| Follow-up Test |
-- |
| Associated With |
Bleeding disorders |
| Associated With |
Liver disease |
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