Factor 10 Activity
Abbrev Code: | F10 | ||
Order Code: | LAB3458 | Order Name: | Factor 10 Assay |
Synonyms: | Stuart Prower Factor; Factor X Activity | ||
Methodology: | Thromboplastin clotting time correction of Factor 10 deficient plasma. Patient dilutions are compared to a known set of standard dilutions and a percentage is determined. | ||
CPT Codes: | 85260 x1, 85260 x1 | ||
Turnaround Time: | Within 8 hours if received into the testing laboratory by 12 p.m. Testing performed 6 days per week. With pre-notification, STATs are done within 1 hour after receipt in the testing laboratory. | ||
Special Instructions: | THIS TEST IS NOT TO BE USED TO MONITOR HEPARIN THERAPY. THE HEPARIN (ANTI-XA) ASSAY IS USED TO MONITOR HEPARIN. This test is not recommended for monitoring Coumadin therapy in patients with Lupus-like inhibitors. Chromogenic Factor 10 or Factor 2 is used to monitor Coumadin therapy in patients with Lupus inhibitors. | ||
Associated Links: | Specimen Collection and Processing for Coagulation Specimens |
Collection Instructions
Specimen: | Blood |
Optimal Volume: | 2.7 mL (in 3 mL tube) - filled to fill line on the tube. |
Minimum\Peds Volume: | 1.8 mL (in 2 mL tube) - filled to fill line on the tube. |
Container: | Blue Na Citrate, 3.2% - fill to fill line on tube |
Collection Instructions: | See link to Specimen Collection and Processing for Coagulation Specimens. |
Causes for Rejection: | Underfilled tubes, overfilled tubes, clotted specimens, not received or processed and frozen within 4 hours of collection or, specimen thawed during transit. |
Processing and Shipping
Specimen Processing: |
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Shipping Instructions: |
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Test Performed at or Referral Lab | UM Special Coag (K) (UMMC East Bank) |
Interpretive
Critical Range: | Less than 10% | ||||||||||||||
Reference Range: |
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Use: | Factor 10 is a common pathway factor. A deficiency can result in a moderately severe bleeding disorder. Factor 10 is dependent on Vitamin K for its carboxylation. It should not, however, be used to monitor Coumadin therapy in patients with Lupus-like inhibitors. Since Prothrombin is the clinically critical factor that needs to be reduced to have effective anticoagulation with Coumadin, Factor 2 is recommended. For laboratories that cannot assay an accurate Factor 2 clotting test in the presence of a lupus inhibitor, Chromogenic Factor 10 is recommended. |
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