COAGULATION FACTOR V ACTIVITY ASSAY, PLASMA
Marquette General Health System
Alpha Code |
FAC5 | |
MGH LIS Test No |
749 | |
Schedule |
Monday through Friday | |
Testing Time |
1 day | |
Testing Lab |
Mayo Labs | |
QORR Test Code |
FAC5 | |
Type |
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Volume |
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Temperature |
Frozen | |
Preservative |
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Collection Info |
See special instructions on "Coagulation Studies." 1. Draw blood in light blue-top (citrate) tubes. Spin down, remove plasma, spin plasma again, and place 1.0 mL of citrate platelet- poor plasma in plastic vial. (Glass vials cannot be accepted.) NOTE: A. Patient must not be receiving heparin. therapy. B. Double-centrifuged specimens are critical for accurate results as platelet contamination may cause spurious results. 2. For factors V, VIII, XI, and XII, draw blood in light blue-top (citrate) tube as a control specimen from a normal, unrelated person at the same time. Spin down, remove plasma, spin plasma again, and place 1.0 mL of citrate platelet-poor plasma in plastic vial. Label clearly on outermost label NORMAL CONTROL. NOTE: Double-centrifuged specimens are critical for accurate results as platelet contamination may cause spurious results. 3. Freeze patient and control specimens immediately at < or = -40 degrees C, if possible. 4. Send patient and control specimens frozen on dry ice in the same shipping container. NOTE: Each coagulation assay requested should have its own separate set of patient and control vials. 5. If priority specimen, mark requisition, give reason, and request a call-back. NOTE: 1. Tests for ristocetin cofactor (9046) and von Willebrand antigen (9051) are recommended in conjunction with assay for factor VIII activity. 2. Please complete a "Coagulation Request Form" and forward it with the specimen. This form is supplied by Mayo Medical Laboratories. Requisitions for this procedure cannot be processed unless the information requested is supplied. |
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Clinical Utilities CPT Codes Reference Range
85220
Adult: 60-145%
Normal full-term newborn infants may have borderline low or
mildly decreased levels (> or = 30-35%) which reach adult levels
within 21 days postnatal.
Healthy premature infants (30-36 weeks gestation) may have borderline
low or mildly decreased levels.
Component Information
Additional Comments Questions or Comments email support@mgh.org
Reference Lab Home Page
Laboratory Main Page
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