Table 6.

Summary of Xpert Ct values for all specimen pairs with at least one MTB-positive result.

Hold time (days)a	ID	Treatment Method	CFM smear grade	Probe Ct values
				A	B	C	D	E	SPC	QC-1	QC-2
0	4219	SOC	Medium	19.2	20.7	20	19.8	20.6	24.8	0	0
		OM-S	Medium	20.7	22.2	21.4	21.7	21.9	23.6	0	0
2	4198	SOC	Low	25.9	27	26.4	27.7	27.4	25.1	0	0
		OM-S	Low	25.4	26.3	25.6	26.9	26.8	24.5	0	0
	4199	SOC	Medium	21.7	23.3	21.8	23.5	22.7	24.4	0	0
		OM-S	V.Low	29.7	29.4	29.7	30.3	30.9	24	0	0
	4235	SOC	Low	22.9	24.2	23.1	24.3	24.1	24	0	0
		OM-S	Low	25.3	26.1	26	26.1	27.2	24.6	0	0
4	4197	SOC	Neg	0	0	0	0	0	25.3	0	0
		OM-S	Low	25.4	26.6	25.9	26.5	26.6	25.6	0	0
	4186	SOC	Low	32.5	31.2	32.4	32.4	34.1	24.7	0	0
		OM-S	Neg	0	0	0	0	0	26.3	0	0
	4195	SOC	Low	27.1	28.5	28.3	29.2	29.3	26.8	0	0
		OM-S	Low	23.3	24.8	23.9	24.6	24.5	24.6	0	0
5	4178	SOC	V.Low	34.2	34.4	34	35	36.2	29.6	0	0
		OM-S	Low	23.3	23.9	23.8	24	25	22.9	0	0
	4179	SOC	Low	24.4	25.3	25	25.3	25.3	27.3	0	0
		OM-S	Low	22.5	23.4	23.2	23.5	24.4	29.7	0	0
	4188	SOC	V.Low	34.2	34.1	34.2	35.9	37.3	30.3	0	0
		OM-S	Low	24.8	25.7	25.5	25.4	26.3	26.6	0	0
	4232	SOC	Medium	18.9	20.3	19	20.3	20.3	23.2	0	0
		OM-S	V.Low	32.6	31	32.2	32.1	34	23.5	0	0
	4236	SOC	Medium	21.5	23	22.4	22.5	23.3	24.5	0	0
		OM-S	Medium	19.8	21.3	20	21.3	21.4	23.2	0	0

CFM = concentrated fluorescent microscopy; Ct = cycle threshold; Neg = negative; OM-S = OMNIgene·SPUTUM (Xpert-tested using Concentrated Sputum protocol); SOC = standard-of-care (Xpert-tested using Raw Sputum protocol); V.Low = very low.

^aHold times are for OM-S specimens only (all SOC specimens were tested on day of collection).