Table 6.

 Data comparison between the present method and a reported method with real toxic fish (figures are the toxin concentrations in µg/kg)^a

Fish	Injection	Present method				Reported method
		CTX1B	Epi-deoxyCTX1B	DeoxyCTX1B	Total	CTX1B	Epi-deoxyCTX1B	DeoxyCTX1B	Total
Red snapper	1	0.07	0.04	0.09	0.20	0.12	0.02	0.07	0.21
	2	0.06	0.04	0.10	0.20	0.07	0.02	0.03	0.13
	3	0.07	0.04	0.08	0.19	0.17	0.04	0.06	0.27
	Avg.	0.07	0.04	0.09	0.20	0.12	0.03	0.05	0.20
	RSD, %	4.6	2.7	9.0	2.6	32.8	23.6	27.3	27.3
Grouper	1	0.10	0.09	0.20	0.40	0.13	0.05	0.19	0.38
	2	0.09	0.08	0.18	0.36	0.10	0.04	0.10	0.23
	3	0.12	0.08	0.24	0.43	0.25	0.09	0.27	0.61
	Avg.	0.10	0.08	0.21	0.39	0.16	0.06	0.19	0.41
	RSD, %	12.0	10.2	13.8	9.8	42.0	37.3	37.1	38.6
White-edged grouper	1	0.04	0.08	0.07	0.19	0.06	0.07	0.08	0.21
	2	0.03	0.09	0.07	0.19	0.04	0.05	0.04	0.13
	3	0.05	0.07	0.10	0.21	0.12	0.11	0.12	0.35
	Avg.	0.04	0.08	0.08	0.19	0.07	0.07	0.08	0.23
	RSD, %	20.7	11.9	21.7	7.4	47.4	35.7	39.6	40.6

^a Average and RSD, % were calculated from three data points produced from three injections of the same test solution. The NIHS used the reported method (23), whereas JFRL used the present method. The absence of CTX3C and 49-epiCTX3C in fish from Okinawa agrees with the report in the literature (12, 23). The abbreviations are the same as in Figure 9.