| FLETCHER FACTOR ACTIVITY ASSAY | Email this article Printer friendly page |
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| Primary Name | Fletcher Factor Assay |
| Synonym | Prekallikrein assay |
| Synonym | -- |
| Contraction | PK assay |
| Contraction | -- |
| Contraction | -- |
| UAB Procedure Number | 2500550 |
| CPT Code | 85292 |
| 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 one (1) hour of collection, separate plasma and test or quick-freeze at -70°C. |
| Specimen Accepted | Daily including weekends. Specimens from outside UAB Hospital will not be sent out to reference laboratories. |
| Test Performed | Test performed by reference laboratory. |
| Available Stat? | No. |
| Description | Fletcher factor deficiency accounts for a prolonged activated partial thromboplastin time test (APTT) result. However, the deficiency has no clinical consequences. |
| Reference Interval | 65-135% |
| Critical Value | -- |
| Therapeutic Range | -- |
| Follow-up Test | -- |
| Associated With | -- |
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