Abstract: Embodiments of a feeding tube system of the present invention provide a feeding tube that provides for monitoring whether it has detected reflux fluid which could potentially lead to serious medical conditions, such as, in the case of a nasogastric tube used for enteral feeding, aspiration of tube feeding into the patient's lungs. The reflux event is made apparent to medical staff and automated systems provide to take action, such as, in the case of enteral feeding, to shut off the delivery of enteral feeding to the patient. This allows remedial measures to be taken so that the associated morbidity and mortality can be prevented. The methods and apparatus are readily acceptable and easy to use by the medical staff, safe for the patient, and inexpensive to manufacture.