Provides certolizumab drug concentration and anti-certolizumab antibodies in order to optimize treatment and facilitate clinical decision-making.
This assay may be helpful in any patient on certolizumab therapy for Crohn's disease, psoriasis, or other autoimmune condition.
Electrochemiluminescence immunoassay (ECLIA); Surface Plasmon Resonance
FCZAC
Ant-TNF drug
Biologic drug level and anti-drug antibody
Biologic monitoring
Cimzia
DoseASSURE
Immunogenicity testing
Therapeutic drug monitoring (TDM)
TNF inhibitor
Anti-TNF
Serum
Specimen Type: Serum
Container/Tube: Red or SST
Specimen Volume: 2 mL
Collection Instructions: Draw blood in a plain red-top tube(s), serum gel tube(s) is acceptable. Spin down and send 2 mL of serum frozen in a plastic vial.
To avoid delays in turnaround time when requesting multiple tests, please submit separate frozen specimens for each test requested.
0.60 mL (Note: This volume does not allow for repeat testing.)
Gross hemolysis | Gross reject; Mild OK |
Gross lipemia | Reject |
Gross icterus | NA |
Other/Tissue/Swab | Specimens other than indicated |
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Serum | Frozen (preferred) | 14 days | |
Refrigerated | 14 days |
Provides certolizumab drug concentration and anti-certolizumab antibodies in order to optimize treatment and facilitate clinical decision-making.
This assay may be helpful in any patient on certolizumab therapy for Crohn's disease, psoriasis, or other autoimmune condition.
Certolizumab:
Quantitation Limit: <1.0 ug/mL
Results of 1 ug/mL or higher indicate detection of certolizumab
Anti-Certolizumab Antibody:
Quantitation Limit: <40 ng/mL
Results of 40 ng/mL or higher indicate detection of anti-certolizumab pegol antibodies.
As with other biologics, the optimal certolizumab concentration depends upon patient-specific factors including co-morbidities, disease, and desired therapeutic endpoint.
Trough blood collection (just before the next dose) is suitable because target ranges and therapeutic cut-offs are established by clinical studies that typically evaluate trough concentrations.
Therefore, the timing of specimen collection should be considered when interpreting drug concentrations. Drug half-life should be factored in when evaluating non-trough concentrations.
Adequate drug trough levels do not guarantee clinical efficacy since primary non-response can be due to mechanistic failure.
Lack of clinical response may be due to inadequate drug exposure, immunogenicity or mechanistic mismatch. Positive anti-certolizumab antibodies should be interpreted in the context of the concomitant free certolizumab drug level.
Tuesday
These tests were developed and their performance characteristics determined by LabCorp. They have not been cleared or approved by the Food and Drug Administration.
80299
82397
Test Id | Test Order Name | Order LOINC Value |
---|---|---|
FCZAC | Certolizumab and Anti-Certo Ab | Not Provided |
Result Id | Test Result Name |
Result LOINC Value
Applies only to results expressed in units of measure originally reported by the performing laboratory. These values do not apply to results that are converted to other units of measure.
|
---|---|---|
Z5637 | Certolizumab | 87404-0 |
Z5638 | Anti-Certolizumab Antibody | 87405-7 |