| Primary
Name |
Factor
XII Assay |
| Synonym |
Factor
XII Functional Assay |
| Synonym |
Hageman
Factor Assay |
| Contraction |
FXII |
| Contraction |
-- |
| Contraction |
-- |
| UAB
Procedure Number |
2500540 |
| CPT
Code |
85280 |
| Specimen |
Collect
one (1) blue-stopper tube (3.2% sodium citrate), filled to specified
volume. Do not underfill or overfill.
|
| Specimen
Management |
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 XII deficiency is present in 1-3 % of individuals and is inherited
as an autosomal recessive mutation. Factor XII deficiency accounts for
many instances of prolonged activated partial thromboplastin time assays
but has no clinical consequence, even in pregnancy or surgery. |
| Reference
Interval |
50-150% |
| Critical
Value |
-- |
| Therapeutic
Range |
-- |
| Follow-up
Test |
--
|
| Associated
With |
-- |
