Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 10/9/2025

SLE Medications Requiring TB Screening

Medications Requiring TB Screening

  • The American College of Rheumatology recommends TB testing before starting glucocorticoids, especially at immunosuppressive doses, as SLE patients have a 2.5-13.8% TB frequency in endemic areas and 0-1.4% in low-incidence regions 1, 2, 3
  • The Centers for Disease Control and Prevention (CDC) indicates that TB screening is required before initiating immunosuppressive drugs, including cyclophosphamide 1 and methotrexate 4

Screening Approach

  • The CDC recommends that TB testing should be performed according to local guidelines, especially before starting glucocorticoids and immunosuppressive drugs 4, 5, 6

Critical Clinical Considerations

  • In endemic areas, routine TB screening is more critical in regions with high TB prevalence (2.5-13.8% frequency in SLE patients) 1, 2
  • In non-endemic areas, routine TB testing in all SLE patients is not recommended, but screening before immunosuppressive therapy remains indicated 1
  • The European League Against Rheumatism (EULAR) suggests that underestimating glucocorticoid risk is a common pitfall, as standard glucocorticoids and conventional immunosuppressants also require TB screening 1, 2, 3