Yes: a urine test for albumin and a blood test for creatinine. The results of the creatinine blood test should be used to estimate glomerular filtration rate (GFR), which is a measure of your level of kidney function.
Hives and swelling are considered to be different expressions of the same problem. Hives occur mostly on the arms, legs and torso, while swelling occurs around the lips, eyes, hands feet and genitals and can involve the tongue and throat. It is simply that the skin and mucous membranes in different areas swell in different ways. How long the problem has been ongoing is also important.
The itchy, red, raised rash that comes with allergic reactions is called hives -- or in fancy medical terminology, urticaria. Anything that causes an allergic reaction can cause hives. Some of the most common causes are bee stings, mosquito bites, soaps, detergents, foods, medications and plants. You don't have to touch something to develop hives. For instance, allergic reactions to food can result in hives.