Patients and researchers cannot order clinical laboratory tests on anyone including themselves. All moderate and high complexity testing (see below) must be conducted in laboratories certified by the Clinical Laboratory Improvement Act (CLIA). Physician office laboratories can receive a Certificate of Waiver for waived tests.
A kidney stone, also known as a renal calculus or nephrolith, is a solid piece of material which is formed in the kidneys from minerals in urine. Kidney stones typically leave the body in the urine stream, and a small stone may pass without causing symptoms.ther associated symptoms include: nausea, vomiting, fever, blood in the urine, pus in the urine, and painful urination. Blockage of the ureter can cause decreased kidney function and dilation of the kidney. Most stones form due to a combination of genetics and environmental factors.
Once a kidney stone has passed or been removed, your doctor may want to know what it's made of. Nearly 80% of kidney stones are calcium-based. The remainder are made primarily of uric acid, struvite, or cystine.A chemical analysis can determine which type of stone you have.hen kidney stones move through the urinary tract, they may cause: 1  Severe pain in the back, belly, or groin. 2  Frequent or painful urination. 3  Blood in the urine. 4  Nausea and vomiting.