Test sent to Prometheus Labs. Please be advised that the fee for the Anser IFX test is $2,500.00 and the CPT code 84999 (unlisted chemistry procedure) is not covered by many insurance carriers. It is recommended that prior authorization is obtained before ordering this test. For specimens referred from a physician office, MLabs will request that Prometheus bill the 3rd party insurance carrier. The patient will be responsible for any copay or deductible balance billed by Prometheus. For additional information regarding test coverage and cost, contact the Prometheus Billing Department at 888-892-8391. If the patient is a hospital inpatient or outpatient on the date of service or client billing is specified with the test order, MLabs will bill the client $2,500.00 for this assay.