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| Primary Name |
Factor XIII Assay |
| Synonym |
Factor XIII Qualitative Assay |
| Synonym |
Urea Solubility Assay |
| Contraction |
FXIII |
| Contraction |
-- |
| Contraction |
-- |
| UAB Procedure Number |
2500410 |
| CPT Code |
85290 |
| 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 |
| Test Performed |
Monday-Friday. |
| Available Stat? |
Pathologist's approval required. |
| Description |
Factor XIII deficiency is rare, and levels must be below 10% in order for bleeding symptoms to appear. |
| Reference Interval |
Normal: presence of a clot for > 24 hours |
| Critical Value |
-- |
| Therapeutic Range |
-- |
| Follow-up Test |
Quantitative factor XIII activity |
| Associated With |
Bleeding disorders |
| Associated With |
-- |
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