She’d been on bioidentical hormone therapy for four months. Her blood levels looked fine. But she still wasn’t sleeping well. Her mood was still unpredictable. Something wasn’t adding up.
Her provider ordered a Dutch test. What came back told a completely different story from the blood work. The estrogen was there, yes, but it was metabolizing down a pathway that creates more inflammatory compounds. The progesterone she was taking wasn’t converting the way they’d hoped. The blood levels looked normal. What was happening in her tissues did not.
This is the gap the Dutch test fills.
What the Dutch Test Is
Dutch stands for Dried Urine Test for Comprehensive Hormones. It’s a urine-based test, sometimes combined with saliva samples, that measures sex hormone metabolites rather than just serum hormone levels.
That distinction matters enormously.
A blood test gives you a snapshot of what’s circulating in the bloodstream at a specific moment. It tells you how much estrogen or progesterone is in your blood right now. What it can’t tell you is what your body is doing with those hormones after they enter your cells, how they’re being broken down, and what byproducts they’re leaving behind.
The Dutch test shows you the downstream picture. It reveals what’s happening at the tissue level, where estrogen receptors, progesterone receptors, and testosterone receptors actually sit. That’s where the biological action is. And that’s where blood work goes quiet.
Why This Matters for Hormone Therapy Management
If you’re starting hormone replacement therapy, a baseline blood panel is always the right first step. It gives your provider a foundation to work from, shows where things stand before any intervention, and helps confirm whether supplementation makes sense at all.
But once therapy begins, blood work alone has limitations. A woman’s serum levels might shift in the right direction after a few weeks of treatment. Her estrogen might go up. Her progesterone might look adequate. And yet she might still feel the same.
The Dutch test explains why. It shows whether she’s metabolizing estrogen through favorable pathways or less favorable ones. It shows how progesterone is converting in the body. It shows whether cortisol rhythm is disrupted, which affects the entire hormonal picture. It shows the metabolite breakdown of testosterone. This is information that simply doesn’t appear on a standard blood draw.
The Dutch panel is considered the gold standard specifically for managing ongoing hormone replacement therapy, not as a first-line screening tool, but as the most precise monitoring instrument available once treatment is underway.
Estrogen Pathways: Why Not All Estrogen Is Equal
Estrogen doesn’t leave the body the same way it enters it. The liver breaks estrogen down into metabolites, and those metabolites follow different pathways depending on the individual’s genetics, gut health, diet, and toxic load.
Some pathways produce metabolites that are relatively inert. Others produce compounds that are more biologically active in ways that can be problematic over time, particularly in breast tissue. The Dutch test shows which pathway is dominant for a given person.
This matters for women on hormone therapy and for women who aren’t. Estrogen dominance, the condition where estrogen is relatively high compared to progesterone, doesn’t only come from taking too much estrogen. It can come from metabolizing estrogen down the wrong pathway, or from the gut microbiome recirculating estrogen instead of eliminating it.
A subset of gut bacteria called the estrobolome controls the final step of estrogen metabolism in the digestive tract. When the estrobolome is imbalanced, an enzyme called beta-glucuronidase reactivates estrogen that was meant to be excreted, sending it back into circulation. The Dutch test can reveal whether estrogen metabolites are accumulating in a way that suggests this recirculation problem is happening.
Blood work won’t show you any of this. A serum estrogen level might look perfectly normal while the tissue-level picture is quite different.
What the Dutch Test Shows About Cortisol
The adrenal-sex hormone connection is real and often overlooked. The thyroid, adrenal glands, and ovaries function as an interconnected system. When one is under stress, the others feel it.
Cortisol, produced by the adrenal glands, follows a daily rhythm. It should peak in the morning and steadily decline through the day, reaching its lowest point during sleep. Chronic stress, trauma history, and prolonged overwork all disrupt this rhythm.
The Dutch test includes a detailed cortisol assessment: morning and nighttime free cortisol, cortisol metabolites, and DHEA levels. This gives a much fuller picture of adrenal function than a single cortisol blood draw does, because that blood draw is another snapshot. One number at one moment in time.
A woman whose morning cortisol is low and whose nighttime cortisol is high, the pattern of adrenal dysregulation, may find that her hormones are never quite in balance no matter how well her replacement therapy is calibrated. The Dutch test surfaces that pattern so it can be addressed directly rather than continued treated around it.
Thyroid, Adrenals, and Sex Hormones: A Triangle, Not a Straight Line
One of the most common mistakes in hormone evaluation is treating these three systems as separate entities. The thyroid gets checked by the endocrinologist. The adrenals get checked by the internist. The sex hormones get checked by the gynecologist. And the patient moves between offices with no one synthesizing the full picture.
The hormonal reality is that these systems influence each other constantly. Estrogen affects thyroid binding. Low progesterone can increase cortisol sensitivity. Chronic cortisol elevation suppresses thyroid output. Depleted DHEA (an adrenal precursor hormone) reduces the raw material available for estrogen and testosterone production.
The Dutch test captures data across all of these systems in a single collection. It’s not a replacement for a full thyroid panel. But it provides context that helps a provider understand why the pieces aren’t fitting together the way they should.
Who Should Consider the Dutch Test
Not every woman needs a Dutch test as her first step. A standard blood panel, which includes estrogen subtypes, progesterone, testosterone, SHBG (sex hormone binding globulin), thyroid markers, and adrenal hormones, is the right starting point.
The Dutch test becomes particularly valuable in a few specific situations:
You’ve been on hormone replacement therapy for a couple months and symptoms haven’t improved as expected.
You have a history of heavy or painful periods, cyclical mood shifts, or breast tenderness that suggests estrogen metabolism issues.
Your provider wants to understand your cortisol rhythm more precisely than a single blood draw allows.
You’re dealing with fatigue or brain fog that doesn’t seem to respond to hormone adjustments, and your provider suspects the adrenal piece is being missed.
When lab results don’t match clinical presentation, when the numbers look fine but the woman doesn’t feel fine, the Dutch test is often where the answer lives.
The Difference Between Normal and Optimal
One of the most consistent frustrations women report is being told their labs are normal when they clearly aren’t feeling normal. Standard lab reference ranges are built from population averages. They tell you whether you’re within the range of what most people show, not whether your levels are where they need to be for you to feel your best.
Functional medicine providers evaluate both the number and the clinical context. A progesterone level that’s technically in range but is low relative to estrogen, or a cortisol pattern that’s disrupted even if both peaks are within reference range, tells a different story than the standard “you’re fine” assessment.
The Dutch test gives providers more data points to work with in making that distinction. And for women who have been dismissed with normal lab results while still feeling terrible, it can be the first test that actually explains what’s been going on.
About the Author: Dr. Sasha Rose is a naturopathic physician and licensed acupuncturist at Med Matrix, a functional medicine clinic in South Portland, Maine. She specializes in women’s hormone health, bioidentical hormone therapy, and root-cause approaches to perimenopause and menopause.
