Regarding linkage to HIV care, being ART-naïve at referral (RR 5.47 95% CI 2.06–14.49) and referral to an inappropriate HIV clinic (RR 1.93 95% CI 1.25–2.98) were associated with failure to link to HIV care in the sensitivity analysis; being a non-South African (RR 1.08 95% CI 0.69–1.70) and lack of HIV status and CD4 count on the referral letter received at the TB clinic (RR 0.94 95% CI 0.64–1.38) were no longer associated with failing linkage to HIV care in the sensitivity analysis. Here, CD4 is linked to tuberculosis.