271 results found
Medical tests
… ovarian function before age 40 (premature ovarian failure). Low egg supply (ovarian reserve). Menopause has occurred. … values in children may mean that puberty is about to start. Low values Low FSH values may mean: A woman is not producing eggs …
Medical tests
… morning hours and are highest about 7 a.m. They drop very low in the evening and during the early phase of sleep. But … infection (sepsis) can cause high cortisol levels. Low values A low level of cortisol in the blood can be caused by: …
Medical tests
… Find the cause of urinary tract infections that keep coming back. Find the cause of ongoing back or flank pain. How To Prepare You may need to stop eating and … done in children to see if they may have an abnormal backflow of urine ( vesicoureteral reflux ). Prepare your child …
Medical tests
… This checks the acid content (pH) in the esophagus. A low pH for long periods may mean that you often have abnormal backflow (reflux) of stomach acid into the esophagus ( … Very strong contractions (spasms) that can cause chest pain. Or they can make you feel that food is stuck after you …
Medical tests
… reticulocyte counts to rise, to help you adjust to the lower oxygen levels at high altitudes. Why It Is Done A … 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
… (gestational diabetes). Determine if an abnormally low blood sugar level ( hypoglycemia ) is present. A test to … . Excess production of growth hormone ( acromegaly ). Low values A fasting glucose level below 2.2 mmol/L in women or below 2.8 mmol/L in men that is …
Medical tests
… her menstrual cycle . After menopause , it drops to a very low but constant level. Estriol levels are most often … than one fetus, such as twins or triplets. Early puberty. Low values Low values may be caused by: Problems with ovarian function. …
Medical tests
… ) is present. Check to see if iron treatment to raise or lower the iron level is working. How To Prepare In general, … as the pancreas or heart, can affect how the organ works. Low values Low ferritin levels often mean an iron deficiency is …
Medical tests
… ), heart disease, Cushing's disease , or Conn's syndrome . Low values A low level may be caused by: Hyperventilation . Aspirin or … ), heart disease, Cushing's disease , or Conn's syndrome . Low values A low level may be caused by: Hyperventilation . …
Medical tests
… and pre-eclampsia (toxemia of pregnancy). Viral infections. Low values Low values may be caused by: High blood sugar levels. … and pre-eclampsia (toxemia of pregnancy). Viral infections. Low values Low values may be caused by: High blood sugar …
