Genetic Pharmacology Service test results are available within two business days. 

Step-by-Step Ordering Instructions

  1. Download and print a GPS test requisition.
  2. Encourage your patient / patient’s parent to read the handout on pages 3 and 4 of the requisition. The decision to have a pharmacogenetic test is voluntary.
  3. Place 2 mL blood in a lavender top EDTA tube. Alternately, two cytobrushes (cheek swabs) may be submitted.  
  4. Make sure the specimen is labeled and the requisition accompanies the specimen. The specimen may be kept at room temperature or refrigerated. DO NOT FREEZE. Do NOT place on ice. 
  5. Call 513-636-4474 to notify the Genetic Pharmacology Service that the sample has been sent.

Specimen Transport Within Greater Cincinnati

Call 513-636-4474 to arrange delivery within the Cincinnati area.

Shipping from Outside Greater Cincinnati

Federal Express

  • Call 513-636-4474 or toll-free 1-800-344-2462, ext. 6-4474, to request FedEx shipping label.
  • Deliveries are accepted Monday-Saturday.
  • Call 1-800-GO-FEDEX to arrange pick up.