Test Details

Mnemonic

FUKAU

Ordering Code

3800208

CPT-4 Code(s)

80299 (Ustekinumab); 83520 (Anti-Ustekinumab Antibody)

Specimen Information

Patient Preparation

Collect immediately before next dose of drug administration.

Collect

Red top

Specimen Preparation

Centrifuge, separate serum from cells and send 0.5 mL serum in a screw capped plastic vial.

Minimum Volume

0.4 mL

Transport Temperature

Refrigerated

Rejection Criteria

Gross hemolysis, Gross lipemia, Gross icterus

Stability

Room temperature: 14 days
Refrigerated: 14 days
Frozen: 14 days

Methodology

Enzyme-linked Immunosorbent Assay (ELISA)
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Reference Range

See report
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Performing Laboratory

Mayo Clinic Laboratories
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