AOZ HPLC is a quantitative method for the simultaneous detection of aflatoxin, ochratoxin A (OTA) and zearalenone (ZEA) in several commodities. AOZ HPLC immunoaffinity columns simultaneously isolate aflatoxins B1, B2, G1, G2; OTA; and ZEA. Using LC or LC-MS/MS for detection, this test produces precise numerical results in micrograms per kilogram (μg/kg) or parts per billion (ppb).