640 South State StreetDover, Delaware 19901
21 West Clarke AvenueMilford, Delaware 19963
401 North Carter RoadSmyrna, DE 19977
640 S. State StreetDover DE 1990121 West Clarke AvenueMilford DE 19963
301 Jefferson AveMilford, DE 19963
1275 S. State StreetDover, Delaware 19901
Vasopressin, arginine vasopressin, ADH
This test measures how much antidiuretic hormone (ADH) is in your blood.
ADH is made by your hypothalamus. ADH keeps the amount of water in your body in balance. Certain conditions can affect the amount of ADH that your body makes. These include hyponatremia, or low sodium levels in your bodily fluids. They also include diabetes insipidus. Symptoms of this condition include urinating often and being very thirsty.
You may have this test if your health care provider thinks you have a problem that affects your ADH levels.
Your health care provider may also order other tests, including a water deprivation test. In this test, you stop drinking fluids for several hours. Then your urine and blood are measured to see how many solid particles they have.
Your provider may also order a water loading test. In this test, you drink certain amounts of water. Then your provider measures the water levels in your urine over time.
Many things may affect your lab test results. These include the method each lab uses to do the test. Even if your test results are different from the normal value, you may not have a problem. To learn what the results mean for you, talk with your health care provider.
Normal ADH levels in adults vary from 0 to 5 pg/mL.
Higher than normal results may mean that you have lung tumors, central nervous system tumors, or a fluid problem after surgery. Or you may have porphyria. This is a very rare blood enzyme deficiency.
Low levels of ADH may mean you have diabetes insipidus or damage to the pituitary gland. Or you may have primary polydipsia. This is extreme thirst because of hypothalamus problems or mental illness.
The test requires a blood sample, which is drawn through a needle from a vein in your arm.
Taking a blood sample with a needle carries risks that include bleeding, infection, bruising, or feeling dizzy. When the needle pricks your arm, you may feel a slight stinging sensation or pain. Afterward, the site may be slightly sore.
Rarely smoking can make ADH levels higher. Other uncommon causes of higher levels of ADH are pregnancy and taking morphine or certain antidepressants.
Tell your health care provider if you smoke, drink alcohol, or take medicines. Be sure your provider knows about all medicines, herbs, vitamins, and supplements you are taking. This includes medicines that don't need a prescription and any illicit drugs you may use.
Bayhealth is Southern Delaware’s healthcare leader with hospitals in Dover and in Milford. Bayhealth provides a wide range of medical services, including cardiovascular, cancer, orthopaedics and rehabilitation, pediatrics, respiratory care, sleep care, surgical weight loss and women’s services.