Table II.
Control Mean (%CV) | Propylene glycol | Glycerin | Ethylene glycol | Diethylene glycol |
Intra-day precision (n = 3) | ||||
LOQ (1 mcg/mL) | 1.2 (20) | 1.1 (13) | 1.0 (6) | 0.8 (13) |
Low (3 mcg/mL) | 3.0 (10) | 2.4 (15) | 3.1 (3) | 2.8 (13) |
Mid (20 mcg/mL) | 21 (14) | 24 (6) | 21 (9) | 23 (9) |
Hi (80 mcg/mL) | 78(12) | 90 (4) | 86 (2) | 82 (11) |
Dil (200 mcg/mL) | 184 (10) | 225 (4) | 220 (4) | 190 (7) |
Inter-day precision (n = 15) | ||||
LOQ (1 mcg/mL) | 1.0 (17) | 1.0 (12) | 1.0 (5) | 0.9 (20) |
Low (3 mcg/mL) | 2.9 (4) | 2.4 (15) | 3.1 (4) | 2.8 (11) |
Mid (20 mcg/mL) | 21 (11) | 23 (3) | 22 (9) | 22 (10) |
Hi (80 mcg/mL) | 80 (10) | 85 (15) | 83 (7) | 83 (9) |
Dil (200 mcg/mL) | 193 (12) | 223 (15) | 204 (9) | 216 (9) |