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Factor VIII (F8) Severe HA Analysis-Reflex

Order Code: 1403 Get Requisition Form
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Test Information
This testing is recommended for the detection of germline variants associated with severe Hemophilia A . Testing begins with F8 inversion Analysis; if this analysis is negative, F8 Sequence Analysis is performed at an additional charge. Refer to F8 Inversion Analysis and F8 Sequence Analysis for test information.
Also Known As Icon
Also Known As
  • F8
  • Factor 8
  • Hemophilia
  • Hemophilia A
Disease State Icon
Disease State
Test Type Icon
Test Type
Genetic Test
Sample Notes Icon
Sample Notes
EDTA Whole Blood, EDTA Bone Marrow, DNA, Buccal Swabs, Amniotic Fluid, Cultured Amniocytes, Direct or Cultured CVS
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Requested Volume
3-5 mL EDTA Whole Blood or Bone Marrow (lavender top), 3-4 Buccal Swabs, >=1 ug DNA at >=50 ng/uL, 7-15 mL Amniotic Fluid, 5-10 mg CVS, 2-T25 flasks cultured amniocytes or CVS (2x10^6 minimum)
Minimum / Pediatric Volume Icon
Minimum / Pediatric Volume
Fetal: Call Laboratory; Parental/Patient: 2 mL EDTA whole blood
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Shipping Information
Room Temperature or Refrigerated
CPT Codes Icon
CPT Codes
  • F8 Inv: 81403; F8 Seq: 81407
Method Icon
See specific testing for methods.
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Turnaround Time
Inversion Analysis: 5-7 days; Sequencing: 21 days
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New York State Approval
For panels or algorithms, refer to each individual component assay for approval status
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DEX Z-Code™
Diagnostic Laboratories
Diagnostic laboratory services including HLA testing, donor testing, immunohematology reference lab testing, hematology testing and more.
Hematology Testing
Versiti provides von Willebrand factor tests, aHUS diagnosis, hemophilia lab tests and other laboratory diagnosis of bleeding and clotting disorders.
Our Experts
Research investigators, postdoctoral fellows and laboratory staff at Versiti Blood Research Institute and Diagnostic Laboratories.
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