🔬 What is the Test?
The ADH (Antidiuretic Hormone) Hormone Assay measures the level of vasopressin (ADH) in the blood. ADH is produced by the hypothalamus and stored in the pituitary gland, playing a crucial role in regulating water balance, blood pressure, and kidney function.
📊 Normal Ranges:
1 to 5 pg/mL (picograms per milliliter) under normal hydration conditions
May vary depending on laboratory methods and hydration status
(Consult a healthcare provider for interpretation based on clinical symptoms.)
🎯 Purpose of the Test:
✅ Diagnoses conditions related to water balance and sodium regulation
✅ Helps detect Diabetes Insipidus (DI) and Syndrome of Inappropriate ADH Secretion (SIADH)
✅ Assists in evaluating dehydration, kidney function, and blood pressure disorders
✅ Identifies causes of excessive thirst, frequent urination, or fluid retention
🩺 When is it Recommended?
🔹 Unexplained excessive thirst and urination (possible diabetes insipidus)
🔹 Low blood sodium levels (hyponatremia)
🔹 Symptoms of fluid retention, confusion, or seizures (possible SIADH)
🔹 Evaluation of pituitary gland disorders
📝 How is the Test Done?
A blood sample is drawn from a vein.
ADH levels are measured using a hormone assay test.
Results are analyzed based on hydration status and sodium levels.
⚠️ What Do Abnormal Results Mean?
📉 Low ADH Levels:
Diabetes Insipidus (DI) → Excessive urination, dehydration
Damage to the hypothalamus or pituitary gland
📈 High ADH Levels:
SIADH (Syndrome of Inappropriate ADH Secretion) → Fluid retention, low sodium
Lung diseases, brain injuries, or certain cancers
🔍 Infographic Design Idea:
Medical-themed colors (blue, red, and white)
Illustration of ADH hormone action on the kidneys
Flowchart showing causes of high and low ADH
Table summarizing normal vs. abnormal results