Posted Date
Effective Date
Update Type New Tests
CPT Code 83520
Order Code IL1B

NEW TESTS

 

Mayo Clinic Laboratories test ID FIN1B Interleukin-1 Beta referred to Inter Science Institute (order code MMLR) was discontinued effective March 13, 2025, due to availability of Mayo’s IL1B assay effective February 13, 2025. This test is used for evaluating patients experiencing inflammatory conditions, autoinflammatory disorders, and infection.

 

New order codes will be available for Interleukin-1 Beta for Plasma and Serum specimens effective May 27, 2025. 

 

Interleukin-1 Beta, Plasma

Order Code:                  IL1B

Fee Code:                     pending (CPT 83520)

LOINC:                         13629-1

Reference Laboratory:   Mayo IL1B

 

Collection Instructions: Collect specimen in a lavender top (EDTA) tube. Place specimen on wet ice immediately following collection. Centrifuge at 4 degrees C, 1500 x g for 10 minutes, aliquot 0.5 mL (minimum 0.3 mL) of plasma into a plastic vial, and freeze within 2 hours of collection. Plasma for this test requires a dedicated sample and cannot be shared for other tests. 

 

Reference Range: <18 years: not established. > or = 18 years: <20.0 pg/mL.

 

Interleukin-1 Beta, Serum

Order Code:                  AIL1B

Fee Code:                     pending (CPT 83520)

LOINC:                         13629-1

Reference Laboratory:   ARUP 0051536

 

Collection Instructions: Collect specimen in an SST or red top tube. Centrifuge, aliquot 1 mL (minimum 0.4 mL) of serum into a plastic vial, and freeze within 2 hours of collection. Serum for this test requires a dedicated sample and cannot be shared for other tests. 

 

Reference Range: < or = 6.7 pg/mL