Method validation

in test of cynoguandine in Metformin tablets , we have a problem in peak of metformin (big tailing ) in sample ,The problem has been addressed by making a sample dilution and changing of injection volume from 20 to 10 . Do we need a validation for the method?

yes, Definitely required.

I have available method for same as per you telling.
if you want then tell me.

suhel patel

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