In multivariable analysis, factors associated with timely blood draw for CD4 count included later year of HIV test (odds ratio [OR] 1.34; 95% confidence interval [CI]: 1.33–1.36), secondary education (OR 1.37; 95% CI: 1.29–1.45), income >$US 125/year (OR 1.06; 95% CI: 1.00–1.13), older age (OR 1.22; 95% CI: 1.19–1.26), residence outside of downtown Port-au-Prince (OR 1.10; 95% CI: 1.04–1.17), and TB at HIV testing (OR 1.92; 95% CI: 1.69–2.18). This evidence concerns the gene CD4 and tuberculosis.