The most commonly affected joints are those in: hands, spine, knee, buttocks This blood test is often ordered within a patient's yearly physical exam to confirm how well their kidneys are functioning. This test can also be ordered every time a patient is acutely ill or when a doctor suspects kidney problems. The following symptoms often result in a doctor using a creatinine blood test: fatigue, loss in appetite, difficulty sleeping, concentration problems, decreased production of urine, trouble urinating, urinating more regularly, hypertension, pain in the mid-back, brown or foamy urine, blood inside urine, and swelling from the eyes, ankles, face, thighs, abdomen or wrists. These symptoms often indicate kidney dysfunction therefore this blood test will probably be performed to diagnose the challenge as well as to rule out kidney dysfunction because the cause. Diverticulitis diagnosed recently, a formation of bubbles or pockets in the lower intestine which produce pain and cramping inside lower left side in the abdomen. In my case the pain sensation and cramp is brought on by the intake of particular foods. The eating of bread, this specific brown whole wheat grains, (good for you!) seeds and nuts, all manage to precede an attack with the disease. Now this is not a dangerous disease and is also apparently very common generally in most members of the western world, it only becomes a problem when one from the sacs who have developed, becomes infected or blocked.