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22452 Factor Inhibitor Assays (II, V, VII, IX, X, XI, XII)

Factor Inhibitor Assays (II, V, VII, IX, X, XI, XII)
Test Code: MISC
Specimen Requirements
Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
*Platelet Poor Plasma 3.2% Citrated Blue Top Tube (BTT)​ ​ Two 0.75 mL  aliquots​ Two 0.75 mL  aliquots​ 0.75 mL​
Collection Processing Instructions
Note: The specific Factor Assay should be test requested at the same time as the specific Factor Inhibitor. The specific Factor Inhibitor will only be performed when the Factor Assay result is below the reference range.
 
Two 0.75 mL citrated Blue Top Tube (BTT) plasma aliquots.
If more than one coagulation test is ordered, a separate aliquot is needed for each test.
-Collect in Citrated Blue Top Tube (BTT)
-Citrate anticoagulant must be adjusted for HCT >55%
-Tubes must be at least 90% full
-Invert completely 3-4 times (without shaking) to mix
*See Instructions for: Preparation of Platelet Poor Plasma
Specimen Stability Information
Specimen Type Temperature Time
​Plasma ​Frozen ​6 months
Rejection Criteria
Clotted or Hemolyzed
​Contamination with IV or Hickman Line fluids
​Specimens that thaw during storage or transport
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
​Marshfield ​Monday through Friday ​2-4 hours Bethesda assay/Siemens BCSXP​
Test Information
Note: The specific Factor Assay should be test requested at the same time as the specific Factor Inhibitor. The specific Factor Inhibitor will only be performed when the Factor Assay result is below the reference range.
Reference Range Information
Performing Location Reference Range
​Marshfield ​0.0 Bethesda Units
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
​85335 ​ ​ Bethesda assay  ​ ​
Ordering Applications
Ordering Application Description
​COM ​Misc Test
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
*Platelet Poor Plasma 3.2% Citrated Blue Top Tube (BTT)​ ​ Two 0.75 mL  aliquots​ Two 0.75 mL  aliquots​ 0.75 mL​
Collection Processing
Note: The specific Factor Assay should be test requested at the same time as the specific Factor Inhibitor. The specific Factor Inhibitor will only be performed when the Factor Assay result is below the reference range.
 
Two 0.75 mL citrated Blue Top Tube (BTT) plasma aliquots.
If more than one coagulation test is ordered, a separate aliquot is needed for each test.
-Collect in Citrated Blue Top Tube (BTT)
-Citrate anticoagulant must be adjusted for HCT >55%
-Tubes must be at least 90% full
-Invert completely 3-4 times (without shaking) to mix
*See Instructions for: Preparation of Platelet Poor Plasma
Specimen Stability Information
Specimen Type Temperature Time
​Plasma ​Frozen ​6 months
Rejection Criteria
Clotted or Hemolyzed
​Contamination with IV or Hickman Line fluids
​Specimens that thaw during storage or transport
Reference Range Information
Performing Location Reference Range
​Marshfield ​0.0 Bethesda Units
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
​Marshfield ​Monday through Friday ​2-4 hours Bethesda assay/Siemens BCSXP​
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
​85335 ​ ​ Bethesda assay  ​ ​
For most current information refer to the Marshfield Laboratory online reference manual.