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Table 2 Cumulative proportion of patients with positive IGRA results with documented completion of chest radiograph and medical evaluation, by testing site. Days counted from blood draw date.

From: Feasibility, acceptability, and cost of tuberculosis testing by whole-blood interferon-gamma assay

  Homeless Clinics (n = 2) TB Clinic Immigrant & Refugee (n = 2) Methadone Clinic Total
Evaluation completed by n = 411 (%) n = 212 (%) n = 164 (%) n = 31 (%) N = 818 (%)
30 days 245 (60) 165 (78) 94 (57) 19 (61) 524 (64)
60 days 267 (65) 181 (85) 105 (64) 21 (68) 575 (70)
90 days 274 (67) 191 (90) 107 (65) 21 (68) 593 (72)