COAGULATION FACTOR VIII INHIBITOR SCREEN PLASMA
Marquette General Health System
HLAB/HOL Code |
FAC8I | |
MGH LIS Test No |
192 | |
Schedule |
Monday-Friday | |
Testing Time |
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Testing Lab |
Mayo Labs | |
QORR Test Code |
FAC8I | |
Type |
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Volume |
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Temperature |
Frozen | |
Preservative |
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Collection Info |
1. Draw blood in a light blue-top (citrate) tube(s). Spin down, remove plasma, spin plasma again, and place 3 mL of platelet-poor plasma into 3 plastic vials each containing 1 mL. (Glass vial is not acceptable.) Note: 1. Specimen must be drawn prior to factor replacement therapy. 2. Double-centrifuged specimens are critical for accurate results as platelet contamination may cause spurious results. 2. Freeze specimens immediately at < or = -40 degrees C, if possible. 3. Send specimens frozen in the same shipping container. Note: Each coagulation assay requested should have its own vial. 4. If priority specimen, mark requisition, give reason, and request a call-back. |
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Clinical Utilities CPT Codes Reference Range
85240/Factor VIII activity assay
85335/Factor VIII inhibitor (if appropriate)
85335/Bethesda Units (if appropriate)
80500/Interpretation (if interpretation provided by consultant)
FACTOR VIII ACTIVITY ASSAY
55-205%
Normal, full-term newborn infants or healthy premature infants
usually have normal or elevated factor VIII.*
FACTOR VIII INHIBITOR SCREEN
Negative
If positive, quantitated in Bethesda units.
BETHESDA TITER
0 Units
Component Information
Additional Comments Questions or Comments email support@mgh.org
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