The other night we had a patient whose blood sugar was low after supper and it was checked in his fingers. After about an hour with critical low values, he was given a dose of D50 and it started to go up but it was still low. Another nurse decided to check the patient's glucose in his earlobe and it was almost doubled but was finally in the normal range. I've never seen this before and could not find this in our policy and procedures. Is this a common practice? Just wondering because I have never heard of or seen this before. I will ask my educator tomorrow but would like to know how common this practice is...Thanks.