45 C.F.R. § 1149.40

When may I file a motion to quash a subpoena?

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A party, entity or the person to whom the subpoena is directed, may file with the ALJ a motion to quash the subpoena:

(a) Within 10 days after service; or

(b) On or before the time specified in the subpoena for compliance if it is less than 10 days after service.