Patients who have weak immune systems are vulnerable to getting shingles and the shingles vaccine is a live vaccine, he added. The study looked at patients with rheumatoid arthritis, psoriasis, psoriatic arthritis, ankylosing spondylitis (an inflammation of the spine), or inflammatory bowel disease.
Fasting Blood Glucose (Blood Sugar) Level. A value above 126 mg/dL on at least 2 occasions typically means a person has diabetes. The Oral Glucose Tolerance Test. An oral glucose tolerance test is one that can be performed in a doctor's office or a lab.
Diabetes is a life-long disease marked by high levels of sugar in the blood. It can be caused by too little insulin (a hormone produced by the pancreas to regulate blood sugar), resistance to insulin (when cells in the body cannot effectively use insulin), or both.