A supplement application for ordering genetic tests is disclosed herein. The supplement application receives an identifier for a medication for a patient and an identifier for the patient from an electronic health records application. The supplement application retrieves an identifier for a variant form of a gene based on the identifier for the medication. The variant form of the gene is known to have an interaction with the medication. When the supplement application determines that the patient has failed to undergo a genetic test for the variant form of the gene, the supplement application retrieves an identifier for a genetic laboratory that offers the genetic test. The supplement application then constructs an order for the genetic test using the identifier for the patient, the identifier for the variant form of the gene, and the identifier for the genetic laboratory and transmits the order to a genetic laboratory computing device.
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