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IgA Vasculitis is a condition that involves swelling (inflammation) of small blood vessels. The swollen blood vessels leak into the skin, joints, intestines, and kidneys.

Pheochromocytoma is a tumor of the adrenal glands. The tumor makes hormones called epinephrine and norepinephrine. This leads to an excess of the hormones in the body. These hormones help manage heart rate and blood pressure, and they have other tasks. Too much of these hormones in the body causes problems.

Diabetes is a condition in which the body can't make enough insulin, or can't use insulin normally. Type 1 diabetes is an autoimmune disorder. The body's immune system damages the cells in the pancreas that make insulin. Insulin is a hormone. It helps sugar (glucose) in the blood get into cells of the body to be used as fuel. When glucose can’t enter the cells, it builds up in the blood. This is called high blood sugar (hyperglycemia).

Addison disease is when the adrenal glands don't make enough of two steroid hormones. The hormones are cortisol and aldosterone. Cortisol controls the body's metabolism, blocks inflammatory reactions, and affects the immune system. Aldosterone manages sodium and potassium levels. Addison disease is fairly rare and may first appear at any age.

This test measures the level of prostate-specific antigen (PSA) in your blood. If your PSA levels start to rise, you may have prostate cancer.

This test measures the concentration of dissolved particles, or osmolality, in your blood.

This test measures the substances metanephrine and normetanephrine in your blood. It helps find out if you have a tumor of the adrenal glands.

This test measures the amount of a substance called methymalonic acid (MMA) in your blood. Higher levels may mean you have a vitamin B-12 deficiency.

This test measures the amount of a substance called methylmalonic acid in your urine. It can help diagnose a vitamin B-12 deficiency.