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. Author manuscript; available in PMC: 2008 Nov 4.
Published in final edited form as: J Pharm Biomed Anal. 2008 Jul 9;48(3):960–964. doi: 10.1016/j.jpba.2008.05.034

Table 2.

Matrix effect (ME), recovery (RE) and process efficiency (PE) data for (R,R)-Fen studied in rat plasma (quantified from peak area ratios of a compound/IS)

Matrix effect (ME) % Recovery (RE) % Process efficiency (PE) %
4 (ng/ml) 61.5 103.2 63.5
40 (ng/ml) 64.0 105.2 67.3
400 (ng/ml) 75.6 95.6 72.3
Average 67.0 101.3 67.7
S.D. 7.5 5.1 4.4
CV 11.2 5.0 6.5