Table 4.
Unit cost of Xpert test under different scenarios for GeneXpert useful life, cartridge prices, and monthly test volume (costs in 2017 U.S. dollars)
| Scenario | Useful life of GeneXpert instrument | Price per Cartridge | Average Monthly Xpert Test Volume | BTB Xpert Unit Cost | MKB Xpert Unit Cost |
|---|---|---|---|---|---|
| Alternative scenario 5 | 5 years | US$10.42 (concessional pricing) |
Max
utilization (BTB:240; MKB:240) |
US$14.22 | US$13.23 |
| Alternative scenario 11 | 10 years | US$12.51 (current bulk purchase pricing) |
Max
utilization (BTB:240; MKB:240) |
US$15.65 | US$14.67 |
| Alternative scenario 2 | 5 years | US$12.51 (current bulk purchase pricing) |
Max
utilization (BTB:240; MKB:240) |
US$16.30 | US$15.31 |
| Alternative scenario 4 | 5 years | US$10.42 (concessional pricing) |
Double current
levels (BTB:80; MKB:50) |
US$21.25 | US$22.85 |
| Alternative scenario 10 | 10 years | US$12.51 (current bulk purchase pricing) |
Double current
levels (BTB:80; MKB:50) |
US$21.41 | US$21.86 |
| Alternative scenario 8 | 5 years | US$17.72 (commercial pricing) |
Max
utilization (BTB:240; MKB:240) |
US$21.51 | US$20.52 |
| Alternative scenario 1 | 5 years | US$12.51 (current bulk purchase pricing) |
Double current
levels (BTB:80; MKB:50) |
US$23.33 | US$24.94 |
| Alternative scenario 7 | 5 years | US$17.72 (commercial pricing) |
Double current
levels (BTB:80; MKB:50) |
US$28.54 | US$30.15 |
| Alternative scenario 9 | 10 years | US$12.51 (current bulk purchase pricing) | Current levels (BTB:40; MKB:25) |
US$30.05 | US$30.96 |
| Alternative scenario 3 | 5 years | US$10.42 (concessional pricing) | Current levels (BTB:40; MKB:25) |
US$31.80 | US$35.03 |
| Actual study unit costs | 5 years | US$12.51 (current bulk purchase pricing) | Current levels (BTB:40; MKB:25) |
US$33.88 | US$37.11 |
| Alternative scenario 6 | 5 years | US$17.72 (commercial pricing) | Current levels (BTB:40; MKB:25) |
US$39.09 | US$42.32 |
Notes: Bold cells indicate dimensions that are varied compared to the actual study unit costs. Max utilization: maximum utilization of three runs per day of a 4-module GeneXpert instrument (12 tests per working day). All unit costs include costs of annual calibration kit (1 kit per instrument, US$521/kit), but not for replacement cartridges or sending instruments abroad for servicing as these were not reported during the study period.