7006: Subcutaneous BiosensorPlease allow 7 business days between ordering and shipment of biosensors. The 21 day warranty only applies to glucose, glutamate sensors and carbon fiber electrodes. The sensor is warranted for 21 days, or until initial precalibration, whichever is first. Longer lead times may also apply for custom sensor types. We will only ship sensors via FedEx 2 Day or Overnight.