Table 5. Summary of accuracy and precision.

		Intra-assay		Inter-assay
Compound	Concentration (ng/mL)	Accuracy (%)	CV (%)	Accuracy (%)	CV (%)
Ampicillin	300	100.33	4.36	101.49	6.18
	900	96.29	5.20	95.37	6.97
	60,000	107.01	2.85	106.62	3.98
	120,000	98.00	4.03	98.19	5.26
Piperacillin	300	107.69	2.99	107.94	6.35
	900	99.00	5.43	99.54	6.49
	60,000	102.82	3.72	103.82	5.65
	120,000	100.64	7.04	101.25	8.20
Tazobactam	150	98.09	4.63	99.16	6.75
	450	110.39	4.32	109.53	5.38
	18,000	104.24	2.63	104.54	5.42
	60,000	99.71	2.29	99.66	7.02
Meropenem	100	101.96	5.40	103.23	7.81
	300	94.10	5.91	94.99	7.50
	20,000	107.59	3.22	107.63	4.22
	40,000	99.22	4.65	99.58	6.07
Acyclovir	100	100.78	5.73	100.31	9.06
	300	92.17	5.51	92.43	7.96
	20,000	92.64	4.31	92.72	6.01
	40,000	92.03	6.88	93.44	8.50
Metronidazole	50	102.78	8.42	101.29	9.44
	150	95.24	6.64	96.05	7.73
	10,000	106.31	4.03	107.10	6.11
	20,000	100.08	4.09	100.08	6.62
Mean		100.38	4.76	100.67	6.70

CV=coefficient of variation.