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UAB
Coagulation Service Individual Assay List
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| Primary
Name |
Factor
IX Assay |
| Synonym |
Factor
IX Functional Assay |
| Synonym |
-- |
| Contraction |
FIX |
| Contraction |
-- |
| Contraction |
-- |
| UAB
Procedure Number |
2500500 |
| CPT
Code |
85250 |
| 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 IX deficiency, termed hemophilia B, is inherited as a sex-linked
recessive and is seen in 1 in 30,000 males. Acquired factor IX deficiency
is seen in liver disease, vitamin K deficiency, and Coumadin therapy.
Factor IX deficiency is associated with mild to severe bleeding. |
| Reference
Interval |
50-150% |
| Critical
Value |
-- |
| Therapeutic
Range |
-- |
| Follow-up
Test |
If an anti-IX inhibitor is suspected, the anti-IX inhibitor titer (Bethesda
titer) may be ordered. |
| Associated
With |
Bleeding
disorders |
| Associated
With |
Vitamin
K deficiency |
| Associated
With |
Liver
disease |
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