
ANDA RTR Guidance Finalized with Some Important Changes – Issuance on Draft on Impurity RTR
n September 16, 2014, the Office of Generic Drugs (OGD) posted its final Guidance on Refuse-to-Receive (RTR) Standards and also published an ancillary draft Guidance entitled ANDA Submissions – Refuse To Receive Standards for Lack of Proper Justification of Impurity Limits (which explains that proper justification for specified identified impurities above qualification thresholds and specified unidentified impurities and unspecified [unknown] impurities with limits above identification thresholds must be included in the ANDA or it will receive an RTR letter).