Adalimumab Concentration and Antiadalimumab Antibody

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Test Details


  • Anti-TNF-alpha Drug
  • Humira


Monitor antiadalimumab therapy for individuals with Crohn's disease, inflammatory bowel disease, ulcerative colitis, rheumatoid arthritis, or other autoimmune conditions. This test provides adalimumab drug concentration levels as well as the level of antiadalimumab antibodies.

In the absence of antiadalimumab antibodies, the adalimumab drug level typically reflects the total adalimumab concentration in serum. In the presence if antiadalimumab antibodies, the adalimumab level typically reflects the antibody-unbound fraction of adalimumab concentration in serum.

This assay provides clinically valid antibody results at drug levels well above treatment targets (>30 ug/mL). Failure of adalimumab therapy may not always be due to the presence of antiadalimumab antibodies. In addition, the absence of antiadalimumab antibodies does not guarantee positive response to treatment.


Electrochemiluminescence Immunoassay (ECLIA)

Specimen Requirements




2 mL

Minimum Volume

1 mL (Note: This volume does not allow for repeat testing).


Red-top tube or gel-barrier tube


Serum must be separated from cells within 45 minutes of venipuncture. Send serum in a plastic transport tube. To avoid delays in turnaround time when requesting multiple test on frozen samples, please submit separate frozen specimens for each test requested.

Storage Instructions

Refrigerate or freeze

Stability Requirements



Room temperature

7 days


7 days


7 days

Causes for Rejection

Plasma specimen received

For Providers

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