Table 3.

Inter- and intraday precision and accuracy for the analytes in human plasma.

Analytes	Concentration (ng/mL)a	Intra-day			Inter-day
		Measured concentration (ng/mL)	Precision (%)	Accuracy (%)	Measured concentration (ng/mL)	Precision (%)	Accuracy (%)
INH	48	45.93	7.18	95.71	45.28	6.91	94.36
	120	118.83	3.17	98.98	121.50	4.01	101.28
	1920	2003.33	3.62	104.36	1956.67	4.88	101.89
	4800	5003.33	3.18	104.22	4874.44	3.24	101.59
RIF	200	207.67	11.68	103.80	189.78	12.11	94.91
	500	532.50	6.71	106.49	524.06	7.65	104.83
	8000	8831.67	4.38	110.40	8210.56	7.27	102.64
	20000	21633.33	7.37	108.22	20200	7.14	100.99
EMB	96	86.68	8.43	90.30	84.85	6.81	88.38
	240	236.33	4.17	98.36	239.11	4.69	99.61
	3840	4023.33	3.24	104.77	3900	4.19	103.89
	9600	10030	4.70	104.58	9650	7.27	100.55
PZA	480	482.67	8.14	100.54	457.78	7.43	95.34
	1200	1238.33	2.67	103.22	1226.11	5.07	102.16
	19200	19566.67	3.29	101.92	19288.89	2.81	100.46
	48000	47816.67	1.80	99.61	47927.78	2.80	99.85
AC-INH	192	201.33	11.63	104.91	188.56	10.21	98.23
	480	476.17	5.32	99.20	480.50	5.70	100.13
	7680	8001.67	5.29	104.20	7829.44	4.42	101.94
	19200	19300	4.16	100.51	19188.89	2.97	99.96

^aThe QC samples from top to bottom are the LLOQ, LQC, MQC, and HQC.