Relationship between methamphetamine levels in the marrow and serum.

Abstract
By determining methamphetamine levels in rat femora marrow by gas chromatography-mass spectrometry (GC-MS), an investigation was undertaken to estimate its serum concentration. The concentration was attained to its maximum at 5 min in the serum and at 60 min in bone marrow after administration. The ratio of serum to marrow levels at 45 to 120 min after administration was 0.140 .+-. 0.021. At doses between 1-10 mg/kg the average ratio of serum to marrow methamphetamine 60 min after administration was 0.111 .+-. 0.044 with a correlation coefficient of 0.837.

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