The short answer
Antidiuretic Hormone (ADH) Profile measures ADH (Antidiuretic Hormone) and Osmolality from a standard blood draw. At TestWell it costs $109.99 plus a $6 lab fee, needs no fasting, and results post in 3–7 business days. Physician-authorized with no doctor's visit or insurance needed; draw at Labcorp.
Hospital Lab
$450
cash pay
Other Labs
$139
+ lab fees
TestWell
$109.99
+ $6 lab fee
The Antidiuretic Hormone (ADH) Profile measures vasopressin — the hormone that regulates how your kidneys retain water — alongside serum osmolality, which shows the concentration of your blood at the time of the draw. Interpreting the two together is what makes this profile clinically useful: ADH should rise and fall in lockstep with osmolality, and a mismatch points toward conditions like diabetes insipidus (too little ADH effect), SIADH (too much), or primary polydipsia. It's typically ordered when evaluating persistent sodium abnormalities, excessive thirst and urination, or unexplained fluid retention. Because ADH is measured directly, this is a specialty send-out test — results take a few days longer than routine labs.
Hormone testing measures the chemical messengers that regulate energy, mood, sex drive, weight, and reproduction — helping pinpoint imbalances that cause a wide range of symptoms.
Anyone with unexplained fatigue, mood changes, libido changes, weight changes, irregular cycles, or considering hormone replacement therapy.
Sample Type
Blood draw
Fasting
Not required
Results In
3–7 business days
Performed At
Labcorp
2 biomarkers tested
Your Antidiuretic Hormone (ADH) Profile results will include values for each of the 2 biomarkers tested, along with reference ranges. Results are reviewed by a licensed physician before being released to your secure portal.
If any values fall outside the normal range, your report will include guidance on what that may mean and recommended next steps. You'll receive an email notification when your results are ready, typically within 3–7 business days.
Typical reference range layout
Lab reports show where your value sits relative to established reference intervals—your physician interprets this in context for you.
No fasting required. Follow any hydration instructions from your provider — fluid intake directly affects ADH and osmolality, so don't dramatically change your water intake right before the draw unless instructed.
A Antidiuretic Hormone (ADH) Profile test costs $109.99 at TestWell — $115.99 all-in when ordered alone, because the $6 lab processing fee is charged once per order, with no draw fee or physician fee added. Hospital outpatient labs typically bill around $450.00 self-pay for the same test, and often more. With insurance, what you pay depends on your deductible and your plan's negotiated rate; TestWell's price is fixed before the draw and is HSA/FSA-eligible.
| Where you order | Price | One test, all-in | Notes |
|---|---|---|---|
| TestWell (drawn at Quest or Labcorp) | $109.99 | $115.99 | Includes the one $6 lab processing fee, charged once per order |
| Hospital outpatient lab, self-pay (typical) | $450.00 | $450.00 | Reference figure; hospital charges vary widely by facility and are often higher |
Lab test codes: Labcorp test no. 010447. Competitor prices are read from the linked public pages and re-checked regularly; the labs' sites may add taxes or change prices without notice.
Compare more: Quest Diagnostics price list · Labcorp price list · Quest vs Labcorp · Lab test price checker
Medically reviewed by Youmna DiStefano, MD · Last reviewed September 2026
TestWell Price
$109.99
+ $6 lab processing fee at checkout
No insurance needed · HIPAA compliant
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Antidiuretic Hormone (ADH) Profile
$109.99