281 results found
Medical tests
… test measures the level of the hormone gastrin in the blood. Gastrin is produced by cells, called G cells, in the … a large portion of the intestines (small bowel resection). Low levels Low gastrin levels may be caused by hypothyroidism . Related …
Medical tests
… test measures the amount of the hormone progesterone in a blood sample. Progesterone is a female hormone produced by … . Overproduction of hormones by the adrenal glands . Low values Low progesterone values may be caused by: Problems with …
Medical tests
… (ALP) test measures the amount of the enzyme ALP in the blood. ALP is made mostly in the liver and in bone with some … is working. How To Prepare If you are having a follow-up ALP test, you may be asked to not eat or drink for 10 … have high ALP levels because the placenta makes ALP. Low values Low levels of ALP can be caused by: Conditions …
Medical tests
… measures the amount of the amino acid homocysteine in the blood. Why It Is Done A homocysteine blood test is done to: … Wrap an elastic band around your upper arm to stop the flow of blood. This makes the veins below the band larger so it is easier to put a needle into the …
Medical tests
… Test Overview Hemochromatosis gene (HFE) testing is a blood test used to check for hereditary hemochromatosis, an … scarring of the liver ( cirrhosis ), darkening of the skin, diabetes , infertility , heart failure , irregular … scarring of the liver ( cirrhosis ), darkening of the skin, diabetes , infertility , heart failure , irregular …
Medical tests
… Test Overview A thyroid-stimulating hormone (TSH) blood test is used to check for thyroid gland problems. TSH … (congenital hypothyroidism) may, in severe cases, have below-average intelligence. Older children also need thyroid … medicine for treatment of an underactive thyroid gland. Low values Low TSH levels may be caused by: An overactive …
Medical tests
… tap, a needle is carefully inserted into the spinal canal low in the back (lumbar area). Samples of CSF are collected. The samples are studied for colour, blood cell counts, protein, glucose, and other substances. … tumour or spread of a cancer from another area of the body, diabetes , infection, injury, Guillain-Barré syndrome , …
Medical tests
… A chloride test measures the level of chloride in your blood or urine. Chloride is one of the most important … An overactive parathyroid gland (hyperparathyroidism). Low chloride levels may be caused by: Conditions that cause … An overactive parathyroid gland (hyperparathyroidism). Low chloride levels may be caused by: Conditions that cause …
Medical tests
… (ACTH). Cortisol has many functions. It helps the body use sugar (glucose) and fat for energy ( metabolism ). It helps … morning hours and are highest about 7 a.m. They drop very low in the evening and during the early phase of sleep. But … not get toilet paper, pubic hair, stool (feces), menstrual blood, or anything else in your urine sample. How It Feels …
Medical tests
… ultrasound test uses reflected sound waves to see how blood flows through a blood vessel. It helps doctors assess the … pregnancy when: The fetus is smaller than normal for the gestational age. Blood flow through the large blood vessel …
