What is an allergy skin test? An allergy is an overreaction, also known as hypersensitivity, of the body’s immune system. Normally, your immune system works to fight off foreign substances like viruses and bacteria. When you have an allergy, your immune system treats a harmless substance, like dust or pollen, as a threat. To fight this perceived threat, […]
What is an allergy blood test? Allergies are a common and chronic condition that involves the body’s immune system. Normally, your immune system works to fight off viruses, bacteria, and other infectious agents. When you have an allergy, your immune system treats a harmless substance, like dust or pollen, as a threat. To fight this perceived
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What is an alkaline phosphatase test? An alkaline phosphatase (ALP) test measures the amount of ALP in your blood. ALP is an enzyme found throughout the body, but it is mostly found in the liver, bones, kidneys, and digestive system. When the liver is damaged, ALP may leak into the bloodstream. High levels of ALP
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What is an aldosterone (ALD) test? This test measures the amount of aldosterone (ALD) in your blood or urine. ALD is a hormone made by your adrenal glands, two small glands located above the kidneys. ALD helps control blood pressure and maintain healthy levels of sodium and potassium. Sodium and potassium are electrolytes. Electrolytes are minerals that help balance the amount of
It is a special x-ray of the colon and rectum (large intestine). How the Test is Performed? It is usually done in the hospital radiology department. This test is done after your colon is completely empty and clean. Your doctor will give you instructions for cleansing your colon. During the test: You lie flat on your back
What is an albumin blood test? An albumin blood test measures the amount of albumin in your blood. Albumin is a protein made by your liver. Albumin helps keep fluid in your bloodstream so it doesn’t leak into other tissues. It is also carries various substances throughout your body, including hormones, vitamins, and enzymes. Low
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What is an adrenocorticotropic hormone (ACTH) test? This test measures the level of adrenocorticotropic hormone (ACTH) in the blood. ACTH is a hormone made by the pituitary gland, a small gland at the base of the brain. ACTH controls the production of another hormone called cortisol. Cortisol is made by the adrenal glands, two small glands located
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What is ADHD screening? ADHD screening, also called an ADHD test, helps find out if you or your child has ADHD. ADHD stands for attention deficit hyperactivity disorder. It used to be called ADD (attention-deficit disorder). ADHD is a behavioural disorder that makes it hard for someone to sit still, pay attention, and focus on tasks. People with
Acid-Fast Bacillus (AFB) Tests What are acid-fast bacillus (AFB) tests? Acid-fast bacillus (AFB) is a type of bacteria that causes tuberculosis and certain other infections. Tuberculosis, commonly known as TB, is a serious bacterial infection that mainly affects the lungs. It can also affect other parts of the body, including the brain, spine, and kidneys. TB is spread from person
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Acetaminophen Level What is an acetaminophen level test? This test measures the amount of acetaminophen in the blood. Acetaminophen is one of the most common medicines used in over-the-counter pain relievers and fever reducers. It is found in more than 200 brand name medicines. These include Tylenol, Excedrin, Nyquil, and Paracetamol, which is commonly found outside
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