EVERY DIABETIC ON THE INSULIN PUMP..." SHOULD TRY THE DEXCOM SEVEN SENSOR....best sensor every... I have been a diabetic for almos 49 years.. and this DEXCOM SEVEN SENSOR .... try it.... dexcom stands behind this sensor.. if you dont like it send it back.... i can now go to sleep at night and do not have to worry if i will wake up with a low bg or high bg....