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. Author manuscript; available in PMC: 2013 Dec 29.
Published in final edited form as: J Mass Spectrom. 2011 Jul;46(7):10.1002/jms.1929. doi: 10.1002/jms.1929

Table 3.

GC-NICI-MS method validation data (method C)

Analyte QC sample Nominal concentration
(µM)
Mean
calculated
concentration
(µM)
Accuracy
(%)
Intra-day precision
(%)
Inter-day precision
(%)
RE (%),
(CV%/CV%
IS corrected)
Calibration range
(µM)
Calibration model Internal standard LOD
(µM)
LOQ (µM)
R-MDA LOW 0.50 0.50 −0.3 4.3 9.5 108(13/1) 0.1–25 Quadratic MX R-MDA d5 0.005 0.1
MED 7.5 7.2 −4.4 2.3 4.3
HIGH 20.0 18.6 −7.2 2.7 9.4 109(6/1)
S-MDA LOW 0.50 0.48 −3.7 4.9 8.6 116(12/4) 0.1–25 Quadratic MX S-MDA d5 0.005 0.1
MED 7.5 7.3 −3.2 3.4 3.1
HIGH 20.0 18.9 −5.5 2.8 8.7 106(5/2)
R-HMA LOW 0.50 0.46 −8.6 8.9 12.9 98(17/5) 0.1–25 Quadratic log log S-Pholedrine 0.025 0.1
MED 7.5 7.6 1.5 9.4 8.0
HIGH 20.0 20.0 −0.1 6.6 11.4 97 (8/4)
S-HMA LOW 0.50 0.46 −8.5 7.1 11.4 93(17/5) 0.1–25 Quadratic og log S-Pholedrine 0.025 0.1
MED 7.5 7.5 −0.4 8.9 7.8
HIGH 20.0 20.0 −0.1 7.2 10.9 99 (7/4)
R-DHA LOW 0.50 0.44 −11.0 4.9 9.9 43 (47/7) 0.25–25 Quadratic log log DHBA 0.05 0.25
MED 7.5 7.2 −3.3 4.8 7.7
HIGH 20.0 18.2 −8.9 5.8 8.2 53 (55/5)
S-DHA LOW 0.50 0.43 −14.4 6.4 10.2 49 (45/8) 0.25–25 Quadratic log log DHBA 0.05 0.25
MED 7.5 7.3 −2.7 10.6 11.5
HIGH 20.0 18.0 −10.2 6.2 11.3 54 (52/6)
R-MDMA LOW 0.50 0.41 −18.7 8.7 15.0 107(15/8) 0.1–125 Quadratic log log R-MDMA d5 0.005 0.1
MED 35.0 36.2 3.3 1.8 5.8
HIGH 100.0 95.6 −4.4 2.2 8.7 105(5/4)
S-MDMA LOW 0.50 0.42 −16.2 8.9 15.6 104(15/5) 0.1–125 Quadratic log log S-MDMA d5 0.005 0.1
MED 35.0 36.2 3.3 1.8 5.6
HIGH 100.0 96.6 −3.4 2.5 7.9 106(5/4)
R-HMMA LOW 0.50 0.43 −14.0 9.5 15.4 83 (20/8) 0.1–125 Quadratic log log S-Pholedrine 0.05 0.1
MED 35.0 37.8 8.1 6.7 5.8
HIGH 100.0 99.1 −0.9 5.8 10.9 99 (8/2)
S-HMMA LOW 0.50 0.41 −17.1 9.8 13.1 81 (18/7) 0.1–125 Quadratic log log S-Pholedrine 0.05 0.1
MED 35.0 38.1 8.7 6.5 5.9
HIGH 100.0 97.8 −2.2 4.8 10.3 99 (9/2)
R-DHMA LOW 0.50 0.43 −14.1 7.1 9.1 20 (56/9) 0.25–37.5 Quadratic 1/X DHBA 0.05 0.25
MED 10.0 10.6 6.1 5.5 9.1
HIGH 35.0 33.8 −3.5 3.9 7.8 26 (80/10)
S-DHMA LOW 0.50 0.42 −15.7 8.9 12.6 19 (62/15) 0.25–37.5 Quadratic 1/X DHBA 0.05 0.25
MED 10.0 10.7 7.2 5.8 8.1
HIGH 35.0 33.7 −3.7 3.8 7.4 28 (76/10)

Bold values indicate values outside the acceptance criteria of ±15% or ±20%