50 results found
Medical tests
… Dilated Eye Examination On this page: Overview Overview A dilated eye examination lets your eye doctor see the back of your eye ( retina ). It's usually …
Medical tests
… Electrophysiology Tests for the Eyes On this page: Test Overview Why It Is Done How To … These tests measure electrical activity that occurs in your eye when you look at something. Electrophysiology includes … tests how well electrical currents are working in the whole eye. It is done to check for certain eye and retina …
Medical tests
… The type of germ may be identified with a microscope or chemical tests. Sometimes other tests are done to find the … . Culture samples may also be collected from the ear or eye, from open or closed sores, or from nails and hair. Why … or viruses that grow will be identified with a microscope, chemical tests, or both. If sensitivity testing is done to …
Medical tests
… to make magnified images, or pictures, of the back of your eye . This includes the retina. It's the part of the eye that's most responsible for your vision. Common imaging … photography. A camera magnifies the back of your eye and makes pictures. Optical coherence tomography, or …
Medical tests
… Overview A serum osmolality test measures the amount of chemicals dissolved in the liquid part (serum) of the blood. Chemicals that affect serum osmolality include sodium, … If you do not drink enough water, the concentration of chemicals in your blood (serum osmolality) increases. When …
Medical tests
… stone analysis is a test done on a kidney stone to see what chemicals are in it. The test is done on a kidney stone that … the urine or removed from the urinary tract during surgery. Chemical analysis of a kidney stone shows the type of stone … Why It Is Done A kidney stone analysis is done to: Find the chemical makeup of a kidney stone. Guide treatment for a …
Medical tests
… back on a bed or table. Or you may sit in a chair with your eyes closed. The EEG technologist will attach several flat … (such as diabetic ketoacidosis ). These problems change the chemical balance in the body, including the brain. The EEG … (such as diabetic ketoacidosis ). These problems change the chemical balance in the body, including the brain. The EEG …
Medical tests
… at a crime scene. Hair samples are tested with specific chemicals and looked at under a microscope. Hair analysis … days. But a hair analysis may show drug use or exposure to chemicals that occurred over the last few months. Why It Is … recently in the body. Hair samples are washed in special chemicals before testing. DNA profiles Hair samples for DNA …
Medical tests
… A nicotine test measures the level of nicotine—or the chemicals it produces, such as cotinine—in your blood or … A nicotine test measures the level of nicotine—or the chemicals it produces, such as cotinine—in your blood or …
Medical tests
… liver function Your doctor may do tests to measure certain chemicals produced by the liver. These tests can help your … liver function Your doctor may do tests to measure certain chemicals produced by the liver. These tests can help your …
