Applying this using formik might be quite fun, Ideally we'd have a drop down for the Sample.reasonForTest where you could select multiple test methods.

For the FHIR side, the easiest way to approach this would be to create the unique identifier from the sample id, concatenated with each of the codes for the test methods, and then add multiple test methods to the ServiceRequest.reasonCode.coding array. So something like 19G-1827373_R59-R134 with two reasons for test codes R59 and R134.

On doing this we should create an issue that we wouldn't update the report if we encountered only an R59 only for this sample, as a way to make this explicit.