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Test Code F9 INH Factor 9 Inhibitor Level

Important Note

Order this test if the patient has had a previously positive Factor 9 Inhibitor Screen and/or Titer. Available STAT with pre-approval.

Clinical System Name

Factor 9 Inhibitor Level

Sample Requirements

Specimen: Whole Blood

Container(s): Lt. Blue/Citrate

Preferred Vol: (1) 2.7 mL

Minimum Vol: (1) 1.8 mL

 

Preferred method of collection is venipuncture with vacuum fill. Test results are affected by incorrect blood volume. Use of a Vascular Access Device for the collection of coag testing is not recommended. Please review the Coagulation Lab Collection Job Aid for detailed instructions. 

Processing Instructions: Main Campus

Deliver whole blood to Coag bench. Coag Technologist will process.

 

Reject due to: clotted, hemolyzed, insufficient quantity (underfill), or improper collection (overfill).

Spin: Y

Aliquot: Y

Temp: -70 C

Storage Location: CPA 2 Freezer ( -70 C) Send Out rack.

 

Specimen should be centrifuged within one hour of collection. Transfer upper 3/4 layer of plasma to plastic tube affixed with large Epic aliquot label. Freeze one aliquot of plasma at -70 C. Preferred plasma volume: 1.0 mL, minimum plasma volume: 0.6 mL. Do not pool. 

Processing Instructions: Offsite & Regional Clinics

Reject due to: clotted, insufficient quantity (underfill), or improper collection (overfill).

Spin: Y

Aliquot: Y

Storage location:  -70 C (preferred) or -20 C. 

 

Specimen should be centrifuged within one hour of collection. Double spin, transfer upper 3/4 layer of plasma to plastic tube affixed with large sample label. Freeze one aliquot of plasma at -70 C (preferred) or -20 C. Preferred plasma volume: 1.0 mL, minimum plasma volume: 0.6 mL. Do not pool. 

 

Non-Children's Hospital Offsite collection: Ship completely frozen on dry ice.

 

Children's Hospital Regional Clinic collection: Ship completely frozen in frozen Nalgene Labtop cooler with ice pack inside an insulated soft cooler.

Stability

Specimen Type Temperature Time
Citrated platelet-poor plasma Room temp N
  Refrigerated N
  Frozen Y

 

Performing Laboratory

Harborview Medical Center

Room GWH47; 523 9th Ave
Seattle, WA 98104
 

Phone Number: (206) 744-3451

Department

Department: Send Outs

 

Phone Number: (206) 987-2563

Synonyms

Factor 9 Inhibitor

Factor IX Inhibitor

Factor 9 Inhibitor Titer

Factor IX Inhibitor Titer
Factor 9 Inhibitor Level

Factor IX Inhibitor Level

Factor 9 Bethesda
Factor IX Bethesda

Availability

STAT Performed TAT
Y, with approval  Drawn daily; performed  M - F 5 d

 

Methodology

Method: None specified

Analytical Volume: None specified

Limitations: None specified

Reference Range

None detected

Values reported in Bethesda units.
 

CPT Codes

85335

Send Out Instructions

 

Reference Test Name: Factor 9 Inhibitor Assay
Reference Test Number: F9INH2
Instructions: See protocol for stat sendouts. If not ordered stat, send out Mon - Fri with the UW/HMC courier.Ship on dry ice. Use a yellow UW/HMC General request form. Keep the bottom copy for our lab records.