Letters Screening tests for TB before biological therapy

Author’s reply to Clifford and colleagues

BMJ 2015; 350 doi: https://doi.org/10.1136/bmj.h2229 (Published 28 April 2015) Cite this as: BMJ 2015;350:h2229
  1. Onn M Kon, consultant respiratory physician1
  1. 1Chest and Allergy Clinic, St Mary’s Hospital, Imperial College NHS Trust, London W2 1NY, UK
  1. onn.kon{at}imperial.nhs.uk

Clifford and colleagues provide insightful and useful information on the merits of dual testing with an interferon gamma release assay (IGRA) and a tuberculin skin test.1 2 …

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