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).
Exactly what your blood sugar level should be two hours after meals is up for debate. As of 2017, ACE guidelines call for the tightest control, with two-hour readings below 140 mg/dl. The Joslin Diabetes Center and the American Diabetes Association suggest postmeal readings below 180 mg/dl.