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Test Code Hem B UM Hemophilia B Mutation Evaluation

Clinical System Name

Hemophilia B Mutation Evaluation


Factor IX gene analysis

Factor 9 Genotyping

Bloodworks Northwest Hem B Mut

Sample Requirements

Specimen: Whole Blood

Container(s): Lavender/EDTA

Preferred Vol: 10 mL

Minimum Vol: 5 mL


Note: A BWNW Hemostasis Requisition must be completed and accompany specimen to lab. Send tubes to lab immediately.

Analysis of amniocytes can be performed on cultured amniocytes. Two T-25 flasks of cells cultured to confluency will be accepted.

Processing Instructions

Reject due to:

Spin: N

Aliquot: N

Temp: RT or 4 C

Storage location: Give whole blood to Send Outs. Store extra labels and copy of requisition in the clear plastic box attached to CPA refrigerator.


Off-site collection:


STAT Performed TAT
N   1 - 2 w


Performing Laboratory

Bloodworks Northwest


Bloodworks Northwest

Hemostasis Laboratory
921 Terry Ave
Seattle WA 98104
(206) 689-6594

Reference Range

None specified


Method: PCR + Sequencing

Analytical Volume:


CPT Codes


Send Out Instructions


Reference Test Name:

DNA Hemophilia B Mutation Screen

Reference Test Number: 3250-10
Instructions: Send sample and requisition to Bloodworks Northwest via courier.