Recovery Studies for Mircobiological Swab Sampling to support clean hold time studies

Dear All,

I am not sure whether Analytical method to support Microbiological swab sampling would require to validate the method for recovery or not. I know that recovery studies are normally performed to support swab sampling for the product + detergent to support the cleaning validation studies.

So the question is, recovery studies required to support microbiological swab sampling as a part of clean hold time studies or not.

Any response will be highly appreciated.