If your patient has a history consistent with an IgE-mediated reaction to penicillin, then consider a penicillin skin test. Skin tests can be done when the patient is well and does not need an antibiotic. Then, if the patient becomes ill at a later time, a penicillin antibiotic can be used, if indicated.
A normal blood sugar level is between 72 mg/dL and 108 mg/dL (4 to 6 mmol/L) for a healthy person. The concentration of glucose in the blood of a healthy person in the morning on an empty stomach is between 68 mg/dL and 108 mg/dL (3.8 and 6.0 mmol/L).
People's blood sugars do vary somewhat, but there are guidelines as to what are normal blood sugar levels at certain times, such as just before you eat and after your eat. According to the American Diabetes Association: A normal non-fasting blood sugar reading taken one to two hours after a meal is one that is below 180 mg/dl. A normal non-fasting blood sugar reading taken before a meal is 70 to 130 mg/dl.