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Rheumatology Services

Full-Service Solutions for Rheumatologists

Broad capabilities in Autoimmune Testing

LabCorp offers a comprehensive testing menu and numerous service benefits to support the needs of a rheumatology practice. With the acquisition of certain assets of RDL Reference Laboratory, LabCorp now offers the full range of autoimmune testing services that RDL has offered for more than 40 years. LabCorp is fully committed to continuing RDL’s legacy of providing innovative autoimmune testing services to aid with the diagnosis, treatment, and management of complex autoimmune syndromes.

Testing Services

LabCorp features a full-service offering to support physicians in the evaluation of patients for rheumatic diseases.

LabCorp’s leading services include:

  • DoseASSURE™, LabCorp’s portfolio of biologics assays that monitor drug concentration and antibody levels to help optimize dosing and frequency: Adalimumab, Certolizumab, Etanercept, Golimumab, Infliximab, Rituximab, Ustekinumab
  • MyoMarker™ myositis testing profiles includes both Myositis-Specific Antibodies (MSA) and Myositis-Associated Antibodies (MAA).
  • ANA by IFA Profiles: Reflex and Non-reflex options. Negative titers confirmed with Anti-Ro Ab.
  • Methotrexate (MTX) Polyglutamates Test: Monitors MTX polyglutamates to determine effectiveness of MTX therapy
  • 14-3-3 eta: Aids in identifying patients with early RA, as it provides a 15% incremental benefit to the diagnostic sensitivity of markers, Rheumatoid Arthritis (RA) Factor and Cyclic Citrullinated Peptide (CCP) Antibodies.1
  • QuantiFERON®-TB Gold Plus: Tuberculosis (TB) blood test allows for screening in a single office visit and is appropriate for immune-compromised patients and those considering biologics therapy

Provider Login

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LabCorp Benefits

  • Multiple connectivity options
  • More than 1900 patient service centers nationwide
  • Extensive network of managed care health plans
  • Experienced medical affairs professionals are available for consultation and educational programs
  • Rheumatology Services Hotline: 800-338-1918

Rheumatology Test Portfolio

Test Name Test No.


— Adalimumab and Anti-Adalimumab Antibody (Serial Monitor), DoseASSURE™ ADL

— Certolizumab and Anti-Certolizumab Antibody, DoseASSURE™ CTZ

— Etanercept and Anti-Etanercept Antibody (Serial Monitor), DoseASSURE™ ETN

— Golimumab and Anti-Golimumab Antibody, DoseASSURE™ GOL

— Infliximab and Anti-Infliximab Antibody (Serial Monitor), DoseASSURE™ IFX

— Rituximab and Anti-Rituximab Antibody, DoseASSURE™ RTX

— Ustekinumab and Anti-Ustekinumab Antibody, DoseASSURE™ UST

Methotrexate Polyglutamates
14.3.3 eta, Rheumatoid Arthritis
ANA 12 Plus Profile (RDL)
ANA 12 Plus Profile, Do All (RDL)
Myomarker® 3 Profile (RDL)
Myomarker® 3 Plus Profile (RDL)
Anti-dsDNA (double stranded) Ab by Farr RIA method (RDL)
Sjogren's Profile Plus (RDL)

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  1. Carrier N, Marotta M, de Brum-Fernandes A, Liang P, Masetto A, Menard HA, et al. Serum levels of 14-3-3η protein supplement C-reactive protein and rheumatoid arthritis-associated antibodies to predict clinical and radiographic outcomes in a prospective cohort of patients with recent-onset inflammatory polyarthritis. Arthritis Research & Therapy. 2016; 18(37) 1-14.