Home
HelpTest Code INHIB Inhibitor Testing for Circulating Anticoagulants (Mixing Studies)
Performing Laboratory
Hunterdon Medical Center Laboratory
Useful For
Inhibitor testing is performed to differentiate a factor deficiency from a circulating inhibitor. PTand PTT testing are performed initially to determine the status of the patient.
A normal result indicates that there is no circulating inhibitor and the test(s) will be reported as "Inhibitor Testing Not Indicated."
Inhibitor Testing will be performed on all abnormal results.
Test Includes
PT and PTT followed by Inhibitor testing, if indicated.
Special Instructions
Note: Specimen must be filled to ETCHED line located on the Blue top tube to acheive the correct ratio of 9 parts blood to 1 part anticoagulant.
Specimen Required
Container/Tube: Blue Top
Specimen Volume: Must be filled to Etched line located on tube.
Specimen Type
Citrated Plasma
Specimen Transport Temperature
Ambient temperature.
Specimen Stability
Ambient temperature. Deliver ≤4 hours.
Reject Specimen Due To
1. Improperly filled tube: underfilled or overfilled.
2. Clotted
3. Hemolysis
Day(s) Test Set up
Monday through Sunday
Reference Values
PT and /or PTT results normal: Inhibitor Testing Not Indicated.
Abnormal results correct with the addition of normal plasma: Consider factor deficiency.
Abnormal results do not correct with the addition of normal plasma: Consider circulating inhibitor.
Methodology
Turbidimetric
CPT Code
Inhibitor PT 85611
Inhibitor PTT 85732