Calculation of AUC0-72 [NCA / SHAM]

posted by Helmut Homepage – Vienna, Austria, 2009-01-26 17:20  – Posting: # 3126
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Dear D. Labes,

» I am with you if the values in the last part of the concentration time course are <LOQ. But I think it's different with missing values (vial broken or so) especially in case of long half life drugs.

If a value is missing – or even came up as <LOQ in repeated analyses – and is included within values which are clearly (!) above LOQ I routinely substitute such a value by a (log)interpolated estimate. I have such a procedure since decades (oh, I’m getting old) in my protocols, and never got any problems.

» Because time points are spread occasionally with 24h in the last part, there may be a considerable portion of AUC missing.

This wouldn’t bother me as long as Clast ≥2–4 times tmax.

» » I wouldn’t start trying to get an estimate of C72.
»
» Is this sentence then furthermore your opinion?

Yes.

Cheers,
Helmut Schütz
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