Table 3.

The concentrations of R,S)-Ket, (R,S)-norKet, (R,S)-DHNK, (2R,6R)-/(2S,6S)-HNK, (2S,6S)-HKet and (2S,6R)-HKet in the calibration standards and quality control standards used in the validation of the achiral method in plasma.

	(R,S)-Ket (ng/ml)	(R,S)-norKet (ng/ml)	(R,S)-DHNK (ng/ml)	(2R,6R)-/(2S,6S)-HNK (ng/ml)	(2S,6S)-HKet (ng/ml)	(2S,6R)-HKet (ng/ml)
Calibration
1	25,000	750	12,500	12,500	40	30
2	18,750	562	9,375	9,375	30	22.5
3	12,500	375	6,250	6,250	20	15
4	6,250	188	3,125	3,125	10	7.5
5	5,000	141	2,344	2,344	7.5	5.6
6	3,125	63	1,563	1,563	5	3.8
QC
High	21,875	656	10,938	10,938	35	26
Medium	15,625	469	7,813	7,813	25	18
Low	9,375	281	4,688	4,688	15	11