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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

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

Sample Requirements

Specimen: Whole Blood

Container(s): Lt. Blue/Citrate

Preferred Vol: (1) 2.7 mL

Minimum Vol: (1) 1.8 mL

 

Note: 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.

If this method is used it requires a 5 cc clearing volume; 3 cc for size 2 French catheter or smaller. Blood must be trasferred to the  Lt Blue/Citrate tube by use of a  blood transfer device to ensure proper fill. 

Specimen should be processed within one hour of collection.

Processing Instructions

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

 

Reject due to: Clotted, hemolyzed, insufficient quantity, or improper collection.

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. 

 

Off-site collection: Preferred method of collection is venipuncture with vacuum fill. Test results are affected by incorrect blood volumel. Use of a Vascular Access Device for the collection of coag testing is not recommended. If this method is used it requires a 5 cc clearing volume; 3 cc for size 2 French catheter or smaller. Blood must be trasferred to the Lt Blue/Citrate tube by use of the blood transfer device. 

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. 

Stability

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

 

Availability

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

 

Performing Laboratory

Harborview Medical Center

Department

Department:  

Harborview Medical Center

Room GWH47; 523 9th Ave
Seattle, WA 98104
 

Phone Number: (206) 744-3451

 

 

CPT Codes

85335

 

Methodology

Method: None specified

Analytical Volume: None specified

Limitations:

Reference Range

 

None detected

Values reported in Bethesda units.
 

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.