Inhibitor Screen
Order Name
INHIB SCRN
Test Number: 1516550
Revision Date 02/27/2023
Test Number: 1516550
Revision Date 02/27/2023
| Test Name | Methodology | LOINC Code |
|---|---|---|
|
PT 1:1 Mixture (Room Temp)
|
Clot Detection | |
|
PTT 1:1 Mixture (Room Temp)
|
Clot Detection | |
|
PTT-LA 1:1 Mixture (Room Temp)
|
Clot Detection | 67097-6 |
|
PT 1:1 Mixture (Incubated)
|
Clot Detection | |
|
PTT 1:1 Mixture (Incubated)
|
Clot Detection | |
|
PTT-LA 1:1 Mixture (Incubated)
|
Clot Detection | |
|
Inhibitor Screen Interpretation
|
| SPECIMEN REQUIREMENTS | ||||
|---|---|---|---|---|
| Specimen | Specimen Volume (min) | Specimen Type | Specimen Container | Transport Environment |
| Preferred | 22 mL (16 mL) | Whole Blood | Sodium Citrate 3.2% (Blue Top) | Room Temperature |
| Alternate 1 | 12 mL (9 mL) | Double Spun Plasma | Sterile, Capped Plastic Tube | Frozen |
| Instructions | Please list the patient's anticoagulant on the "Coagulopathy Questionnaire Form" and submit with specimen or fax to 918-744-3236. Please indicate anticoagulant therapy. Collect 6-8 Sodium Citrate 3.2% (Blue Top) tubes. Each 2.7mL Sodium Citrate 3.2% (Blue Top) tube must be filled to the proper level, no hemolysis. Improperly filled tubes can give erroneous results. Whole blood must be transported to lab immediately. If testing cannot be started within 4 hours of collection the specimen must be double spun then 1.5mL plasma aliquot from each tube into individual plastic aliquot tubes and freeze. Do not pool aliquots together! Coagulopathy Questionnaire Form Double Spin Procedure |
|||
| GENERAL INFORMATION | |
|---|---|
| Testing Schedule | Mon - Fri |
| Expected TAT | Testing dependent |
| Clinical Use | Specific factor inhibitors are immunoglobulins with specificity for a single coagulation protein. The most common specific inhibitors are antibodies produced in relation to factor VIII. Nonspecific inhibitors, such as lupus anticoagulants, are also detected. |
| Notes | If PT Mix is performed 85611X2 If PTT Mix is performed 85732X2 If PTT-LA Mix is performed 85732X2 Testing includes a pathology interpretation. |
| CPT Code(s) | See Test Notes |
| Lab Section | Coagulation |