U-100: See unit of insulin.
Ulcer: A break in the skin; a deep sore. People with diabetes may develop ulcers from minor scrapes on the feet or legs, from cuts that heal slowly, or from the rubbing of shoes that don't fit well. Ulcers can become infected and should be treated promptly.
Ultralente insulin: A type of insulin that is long acting, usually the action of this type of insulin works for 25-36 hours after injection. This type of insulin has an onset of action four to five hours after injecting and works most powerfully at eight to 14 hours after injection.
Unit of insulin: The basic measure of insulin. U-100 is the most common concentration of insulin. U-100 means that there are 100 units of insulin per milliliter (ml) of liquid. For the occasional patient that has severe insulin resistance insulin is available as a U-500 form.
Unstable diabetes: See brittle diabetes.
Urine testing: Checking urine to see if it contains ketones. If you have type 1 diabetes, are pregnant and have diabetes, or have gestational diabetes, your doctor may ask you to check your urine for ketones. This is an easy test done at home with a dipstick measure.
Urologist: A doctor who specializes in treatment of the urinary tract for men and women, as well as treatment of the genital organs for males.
Yesterday, I heard a patient advocate say he was thankful for diabetes. He said, “If I had to choose a disease, type 1 diabetes isn’t a bad choice. Sometimes I feel thankful for having it.” The 40-something who said this was speaking on the radio as I was driving. I nearly swerved off the road.
Although accurate and convenient for detecting type 2 diabetes and prediabetes in adults, current HbA1c cutoffs may not be enough to diagnose diabetes in children.
A 2010 clinical practice guideline from the American Diabetes Association recommends that physicians exclusively use the HbA1c assay to detect diabetes. The guidelines recommend a cutoff of 6.5% or greater for diagnosis.
However, researchers for two recent studies highlight significant vulnerabilities in the recommended test’s ability to diagnose diabetes and prediabetes in children.