DiaPharma’s regular business hours:

  • Monday through Thursday: 8 am to 5 pm Eastern Time (ET) with limited phone support available until 8pm ET
  • Friday: 8am to 1pm ET with limited phone support available until 4 pm ET

DiaPharma’s “summer hours”:

  • Monday through Thursday: 8 am to 5 pm EDT with limited phone support available until 8pm ET
  • Friday: Office closed on Fridays from May 29th through September 4th.

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Holiday Schedule