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Risankizumab and Anti-Risankizumab Antibody-994

Test info

Test name:

Risankizumab and Anti-Risankizumab Antibody

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

Skyrizi
IL23 Inhibitor
Drug Monitoring
Biologic Therapeutic Drug Monitoring (TDM)
Immunogenicity Testing

Tests included:

Risankizumab drug level and Anti-Risankizumab Antibody

Useful for:

This test is used for quantification of risankizumab drug (μg/mL) and risankizumab anti-drug antibodies (ng/mL) in patients treated with risankizumab for ulcerative colitis, Crohn's disease, plaque psoriasis and psoriatic arthritis.

Specimen

Specimen type:

Serum

Collection container:

Gold serum separator (SST) tube

Volume:

2.0 mL

Minimum volume:

1.0 mL

Collection instructions:

Immediatley following collection, mix sample by gently inverting 5 times

Processing instructions:

Allow a minimum clotting time of 30-60 minutes
Spin within two (2) hours of sample collectioTransfer serum to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp), labelled as serum
Freeze

Transport container:

Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)

Alternate collection container:

Red serum vial/tube, 5 mL

Transport and stability:

Frozen (preferred) - 14 days

Freeze/thaw cycles: stable x 6

Refrigerated - 14 days

Ambient - 7 days

Reason for rejection:

Gross lipemic or hemolyzed samples

Performance

Performing lab:

LabCorp Burlington (505895); R-NX

TAT:

14 days

Method:

Electrochemiluminescence Immunoassay (ECLIA)

Clinical and Interpretive info

Reference ranges:

An interpretive report will be provided

Billing

CPT codes:

80299
82397

Tracking

Date created:

09/26/2025

Review date:

09/26/2025