Table 2. Calculated costs for TB diagnostic tests for the public sector, breakdown by components.
| TST | sputum smearmicroscopy(ZN) | culture(liquid) | culture(solid) | XpertMTB/RIF# | PCR‡ | First lineDST(liquid, SIRE) | First lineDST(liquid, SIREP) | First lineDST(solid, SIRE) | |
| Consumables | $2.31 | $0.32 | $26.67 | $10.26 | ‡ | $117.02 | $178,38 | $31.28 | |
| Instrument utility | N/A | $0.41 | $0.57 | $0.88 | $1.56 | $1.56 | $0.72 | ||
| Labor | $3.21 | $1.92 | $2.14 | $3.74 | $3.42 | $3.85 | $6.41 | ||
| Overhead (non-reportable results, repeats, sample transport and lab operating expenses) | $0.39 | $0.19 | $2.06 | $1.04 | $8.54 | $12.87 | $2.69 | ||
| Total (USD) | $5.90 | $2.85 | $31.43 | $16.36 | $17.80 | $44.99 | $130.54 | $196.65 | $41.11 |
TST = tuberculin skin test; ZN = Ziehl-Neelsen; PCR = polymerase chain reaction; DST = drug susceptibility test; SIRE = Streptomycin, Isoniazid, Rifampin, Ethambutol; SIREP = Streptomycin, Isoniazid, Rifampin, Ethambuthol, Pyrazinamid; USD = United States Dollars.
#
Costing is based on Xpert implementation study.
‡
Costing done by one of the laboratories (no breakdown known).