17 ketosteroids fractionation

Plasma cortisol levels usually peak about 45 to 60 minutes after an injection of Cortrosyn™ and some prefer the 60-minute interval for testing for this reason. While it is true that the 60-minute values are usually higher than the 30-minute values, the difference may not be significant enough in most cases to outweigh the disadvantage of a longer testing period. If the 60-minute test period is used, the criterion for a normal response is an approximate doubling of the basal plasma cortisol value.
In patients with a raised plasma bilirubin or in patients where the plasma contains free hemoglobin, falsely high fluorescence measurements will result. The test may be performed at any time during the day but because of the physiological diurnal variation of plasma cortisol the criteria listed by Wood cannot apply. It has been shown that basal plasma cortisol levels and the post Cortrosyn™ increment exhibit diurnal changes. However, the 30-minute plasma cortisol level remains unchanged throughout the day so that only this single criterion should be used (3).
Parenteral drug products should be inspected visually for particulate matter and discoloration whenever solution and container permit.
Reconstituted Cortrosyn™ should not be retained.

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      Testosterone is a C19 sex steroid hormone, that may be synthesized from:

17 ketosteroids fractionation

17 ketosteroids fractionation

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