Does anyone know of any references that clearly outlines to the user what validation parameters need to be validated for the following types of method:

1)"In-house" & Compendial HPLC methods

2) Spectrophotometric methods such as UV-Vis, AA, ICP & NIR

3) TLC & Titration methods

If the in-house methods are used to release product, this is a good reference: http://www.waters.com/WatersDivision/waters_website/Applications/validate/Vldt_top.asp

I believe for compendial methods, a method transfer/evaluation (described in the above article) is indicated. Or check the USP VALIDATION OF COMPENDIAL METHODS

ICH guideline Q2 deals with analytical validation: http://www.ich.org/ich5q.html

The USP section is 1225.