EchiTAb-PlusNone

EchiTAb-PlusNone appears to be a specific term or code, potentially related to a diagnostic test, medical product, or data classification. Without additional context, it's challenging to provide a precise explanation. If it refers to a test, "Echi" might relate to echinococcus or echocardiography, "TAb" could denote a test for antibodies, and "PlusNone" might indicate additional features or the absence thereof. For clarity, please provide more details or the context in which this term is used, so I can offer a more accurate and relevant explanation.