Sign in →

Test Code 76479996 Interferon Gamma Release Assay TB

Performing Laboratory

Oxford Diagnostics Laboratory

Methodology

Enzyme linked Immunospot (ELISpot)

Specimen Requirements

Specimen Type: Whole Blood

Container/Tube: Dark green Lithium heparin

Specimen Volume: 6mL

Specimen Minimum Volume: 6mL

Immune compromised patients should have 2 full tubes collected.

Collection Instructions: Must be collected between the hours of 0600 and 1800 Monday through Friday only. Must arrive in lab by 1900 due to sample stability.

Day(s) Test Set Up

Sent out daily.

Turnaround Time: 3 days

Reference Values

Positive= >8 spots

Negative = <4 spots

Borderline = 5,6,7 spots

Invalid                           

Test Classification and CPT Coding

86481

Additional Information

For BJH Laboratory Use Only

Alternate tube: Green with gel separator (Do Not Spin)

Minimum Volume: 6mL

Immune compromised patients should have 2 full tubes collected.

Laboratory Processing Instructions: Do not spin. Deliver to Sendouts

Any requests for Quantiferon will be converted to Interferon Gamma Release Assay TB

LOINC Code

Name LOINC Code
Interferon Gamma Release Assay TB 74281-7