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6000.00 A
5000.00

4000.00
[−20°C]
pg/mL 3000.00 X [0°C]
[24°CL]
[24°CN]
[50°C]
2000.00
1000.00

0.00
0 1 2 3 4 5 6 7 8 9 10
Days
6000.00 B

5000.00
X
4000.00
[−20°C]
pg/mL 3000.00 X [0°C]
[24°CL]
[24°CN]
[50°C]
2000.00
1000.00
0.00
0 1 2 3 4 5 6 7 8 9 10
Days
6000.00 C
5000.00

4000.00
X [−20°C]
pg/mL 3000.00 X X [0°C]
[24°CL]
[24°CN]
[50°C]
X
2000.00
1000.00
0.00
0 1 2 3 4 5 6 7 8 9 10
Days
Figure 2.8 Stability of 2-oxo-3-hydroxy-LSD at pH 4.6 (A), 6.5 (B), and 8.4 (C)
at different storage conditions. (From Klette K.L., Horn C.K., Stout P.R., and
Anderson C.J., LC-MS analysis of human urine specimens for 2-oxo-3-hydroxy
LSD: Method validation for potential interferants and stability study for 2-oxo-
3-hydroxy LSD under various storage conditions. J. Anal. Toxicol. 26, 193, 2002.
Reproduced from the Journal of Analytical Toxicology by permission of Preston
Publications, a division of Preston Industries, Inc.)

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