A method that includes configuring a first and a second identification band with unique serial numbers, each of said bands being connected to a signal cable attached to a sensor is provided. The first identification band is securely fixed to a first location on the patient and the second identification band is securely fixed to a second location on the patient. The first and second identification bands are connected with a bridging band. The signal cable is connected to a diagnostic test monitoring system and the patient's oxygen saturation is monitored. The first and second identification bands are configured to evidence tampering when removed.