The two results answer different questions, which is why a lab panel prints them on separate lines and a clinician reads them side by side rather than swapping one for the other.
The DHEA-S test measures the sulfated form of dehydroepiandrosterone circulating in your blood, reported in micrograms per decilitre, and it is used as a marker of how much androgen precursor the adrenal glands are producing. Because the sulfated form sits in the bloodstream at high concentration and stays steady through the day, a single sample is usually enough, and timing matters less than it does for many hormones. The full breakdown of what the marker is, how the draw is handled, what the standard and optimal ranges look like and how to interpret a single value lives on the dedicated DHEA-S biomarker page. The rest of this guide stays on the question you came for, which is how this marker relates to testosterone.
People confuse them because DHEA-S sits upstream of testosterone on the same steroid pathway, and both get filed under the heading of androgens on a lab report. That shared label does a lot of damage. Research suggests that DHEA and DHEA-S function mainly as precursors with weak direct activity of their own, exerting most of their androgenic effect only after conversion into more potent steroids inside target tissues 1.
There is also a naming problem. Dehydroepiandrosterone, DHEA, and dehydroepiandrosterone sulfate, DHEA-S, are two forms of the same molecule, one plain and one with a sulfate group attached. Testosterone is a separate molecule entirely, several enzymatic steps downstream. Seeing all three described as androgens on a results portal invites the assumption that they move together, rise together and mean the same thing. They do not.
The practical consequence is that a reader with a DHEA-S result above the standard range often assumes they have high testosterone, and a reader with a low DHEA-S result often assumes the opposite. Neither conclusion follows from a single number. One marker describes adrenal output. The other describes the active androgen actually circulating and available to bind receptors.
They are made in different glands. DHEA and its sulfate come from the innermost layer of the adrenal cortex, the zona reticularis, which is the zone specialised for adrenal androgen production and is regulated separately from the layers that handle cortisol and mineral balance 2. Testosterone, by contrast, is produced mainly in the Leydig cells of the testes in men under signalling from the pituitary gland, and in women by the ovaries together with conversion in peripheral tissue.
That anatomical split is the single most useful thing to hold onto. The adrenal glands answer to one control loop and the gonads answer to another, so the two markers can move independently.
| Feature | DHEA-S | Testosterone |
|---|---|---|
| Main production site | Zona reticularis of the adrenal cortex | Testes in men, ovaries plus peripheral tissue in women |
| Role | Circulating precursor and reservoir | Active androgen that binds the androgen receptor |
| Form in blood | Sulfated, water soluble, high circulating concentration | Bound to SHBG and albumin, with a small free fraction |
| Stability across the day | Very stable, one sample is usually enough | Varies across the day, morning sampling is usual |
| Usual reporting unit | µg/dL | ng/dL for total, pg/mL for free |
| Question it answers | How much androgen precursor the adrenals are making | How much active androgen is currently circulating |
A small amount of testosterone in men does come from adrenal precursors, and in women the adrenal contribution to the overall androgen pool is proportionally larger. That overlap is real, but it is a contribution, not an equivalence.
Through a short enzymatic chain that happens mostly inside tissues rather than in the bloodstream. The sulfate group is removed to regenerate DHEA, which is then converted onward to androstenedione and from there to testosterone, with further conversion to other steroids possible depending on the tissue and the enzymes it expresses. Research suggests this local conversion inside peripheral target tissues is how DHEA and DHEA-S exert most of their biological effect, rather than acting directly on receptors themselves 1.
Two details matter for reading your results. First, the conversion is not automatic or uniform. Skin, fat, liver, brain and reproductive tissue each carry a different mix of the enzymes involved, so the same circulating DHEA-S level can produce different amounts of downstream androgen in different people and in different tissues of the same person.
Second, much of that locally produced androgen acts where it is made and is broken down there, so it never fully shows up as a rise in your circulating testosterone number. This is why a DHEA-S value sitting well above the standard range does not reliably predict what a total testosterone test will show. The precursor pool and the measured active hormone are related, but the relationship is loose enough that a clinician will want both numbers rather than guessing one from the other.
In adult men, only a minor share. The testes produce the large majority of circulating testosterone, and the adrenal precursor pathway adds a relatively small amount on top. In women, the picture is different, because there is no testicular production, so adrenal precursors and peripheral conversion account for a much larger proportion of total androgen exposure. Adrenal androgen production is a distinct, separately regulated function of the adrenal cortex in humans 2.
This asymmetry explains a lot of the clinical interest. A shift in adrenal androgen output tends to make a bigger practical difference to the overall androgen picture in women than it does in men, which is why DHEA-S is so often ordered as part of a female androgen workup and interpreted alongside cycle history and other markers.
It also explains why adding up precursor and active hormone values makes no sense. They are measured in different units, they circulate at wildly different concentrations, and they are not interchangeable currencies. A DHEA-S reading in the hundreds of micrograms per decilitre and a testosterone reading in the hundreds of nanograms per decilitre are not describing similar quantities of the same thing.
Because they behave differently in blood and answer different clinical questions. DHEA-S circulates at a high, stable concentration with a long presence in the bloodstream, so one sample at almost any hour gives a representative picture of adrenal androgen output. Testosterone fluctuates across the day, is pulsatile in its release and is largely bound to carrier proteins, so the sampling time and the binding protein status both change what the number means.
That is why a thorough androgen assessment usually includes total testosterone, a free or calculated free testosterone value and SHBG, while DHEA-S stands alone as a single stable figure. Running one marker as a proxy for the other would throw away the specific information each one carries.
There is a diagnostic logic too. A raised androgen picture can originate at the adrenal glands, at the gonads, or both. Measuring the adrenal precursor separately from the active gonadal hormone helps a clinician work out which compartment is driving what they are seeing, rather than confirming only that androgen activity is present. Separating them is the whole point.
Standard lab reference ranges for DHEA-S are wide, because the marker varies substantially with age and sex. The table below shows typical lab reference ranges alongside FitScript's optimal ranges.
| Group | Typical lab reference range | FitScript optimal range |
|---|---|---|
| Men | 80 to 560 µg/dL | 250 to 450 µg/dL |
| Women | 60 to 340 µg/dL | 150 to 300 µg/dL |
Reference ranges vary by lab, assay, age and sex, so always read your own report against the range printed on it. Optimal ranges are optimisation targets, not diagnostic cut-offs, and a value outside them is not a diagnosis of anything.
Testosterone is reported in different units again, usually nanograms per decilitre for total testosterone and picograms per millilitre for the free fraction, with ranges that differ sharply between men and women and between assay methods. Because those ranges are so assay dependent, the number printed on your own report is the one that matters, not a figure borrowed from an article. The key point for this question is that the two markers have separate units, separate ranges and separate meanings, so comparing their positions within their own ranges is informative while comparing the raw numbers is not.
It usually reflects adrenal androgen output running above the typical band, which is a different situation from high gonadal testosterone production. Elevated DHEA-S is associated with a subset of polycystic ovary syndrome, where adrenal androgen output contributes alongside ovarian androgen production rather than replacing it 3.
Metabolic factors belong in the same conversation. Research suggests a relationship between insulin signalling and adrenal androgen synthesis, which is one reason a clinician reviewing a raised adrenal androgen result often looks at metabolic markers at the same time 4.
Other explanations sit further down the list and are a clinician's territory to work through, including less common adrenal conditions and enzyme variants that shift how steroid precursors are handled. A single raised value does not identify which of these applies, and nobody should read one off a results portal.
The sensible way to read it is in three steps. The observation is that adrenal androgen production is running higher than the standard range. The possible meaning spans benign normal variation, metabolic influence, a reproductive hormone pattern or, less commonly, an adrenal cause. The next step is to bring the result to a clinician, who may repeat the test and pair it with related androgens, metabolic markers and your history before drawing any conclusion.
Most often, age. DHEA-S peaks in early adulthood and declines steadily across the decades that follow, so a result in the lower part of the standard range is an ordinary finding in an older adult and says little on its own 1.
There is a clinical use for low values too. Research suggests that DHEA-S measured alongside a baseline cortisol value may help in assessing adrenal insufficiency, which is why the two are sometimes ordered together when adrenal function is in question 5.
Acute illness, significant physiological stress and recovery from surgery can also shift adrenal steroid output, so a value drawn during or shortly after a demanding period is not necessarily representative of your baseline. Repeat testing at a stable time often answers more than a single draw.
What a low DHEA-S result does not do is tell you that your testosterone is low. The gonadal axis has its own control loop, and plenty of people carry a low adrenal precursor value with an unremarkable testosterone result. If symptoms point toward low androgen activity, the testosterone measurement itself, with SHBG and the pituitary signalling markers, is what answers that question. Bring both results to a clinician rather than inferring one from the other.
Yes, and it is a common pattern.
In practice this means a man can have a testosterone result below his lab's range and a mid-range DHEA-S value on the same report. The adrenal marker will not flag the issue, and a panel that measured only DHEA-S would miss it entirely. That is the strongest argument against using one as a stand-in for the other.
Binding proteins add a further layer. Total testosterone includes the fraction bound tightly to SHBG, which is not freely available to tissues, so a total value can read reassuringly while the free fraction sits lower, or the reverse. DHEA-S carries no equivalent complication, which is part of why it is a simpler number to collect and a less complete one to interpret alone.
The practical reading is straightforward. If the question is about active androgen status, measure testosterone properly, in the morning, with SHBG and the pituitary markers, and have a clinician interpret the set rather than any single line.
It has activity of its own in the nervous system. DHEA and DHEA-S have been characterised as neuroactive neurosteroids that interact with receptor systems in the brain, a role separate from their function as precursors for sex steroids 6.
The marker also attracts attention in ageing and cardiovascular contexts. Research suggests that cortisol, DHEAS and the ratio between them relate to measures of epigenetic age acceleration 7. Separately, a lower endogenous DHEA/DHEAS level is associated with coronary heart disease in a systematic review and meta-analysis 8.
Those are associations observed across populations, not predictions about an individual, and they do not establish that changing the number changes the outcome. Nobody should read their own DHEA-S value as a verdict on their heart or their biological age. What these findings do justify is tracking the marker as part of a broader panel rather than dismissing it as a minor androgen footnote, and discussing any persistent outlier with a clinician who can see the rest of your picture.
The ones that let a clinician tell adrenal activity apart from gonadal activity. On the androgen side, total testosterone, free or calculated free testosterone and SHBG together describe how much active hormone is circulating and how much of it is actually available. LH and FSH show whether the pituitary signal driving gonadal production is intact, which separates a gonadal cause from a central one.
On the adrenal side, a morning cortisol value sits naturally next to DHEA-S, since both come from the adrenal cortex under related but distinct control, and the relationship between cortisol and DHEAS has itself been studied as a composite measure 7. Androstenedione, the intermediate between DHEA and testosterone, is sometimes added when the pattern is unclear.
Metabolic markers earn their place too. Given the relationship between insulin signalling and adrenal androgen synthesis described in the literature 4, fasting insulin, fasting glucose and HbA1c often sit on the same requisition as an androgen workup.
This is the case for breadth over single markers. A FitScript membership covers 150+ biomarkers tested per year, with results interpreted by Atlas and reviewed in the context of your history, which is the level at which a precursor and an active hormone can be read against each other rather than in isolation.
Age and sex do most of the work. Levels rise through adrenarche and young adulthood and then fall progressively across later decades, with men generally running higher absolute values than women 1. That age curve is why the standard range is so wide and why comparing your value to a friend of a different age tells you very little.
Physiological state matters next. Acute illness, major stress on the body and recovery from surgery can shift adrenal steroid output, so a sample taken during an unsettled period may not reflect your usual level. Pregnancy changes steroid handling considerably. Current medicines are also part of the picture, which is why a clinician reviews your medicine list before interpreting an unexpected value, and that review belongs to them rather than to an article.
Assay variation is the quiet one. Different laboratories use different methods and print different reference ranges, so a value that looks like a change may partly reflect a change of lab. Where possible, track the marker at the same laboratory over time, and compare each result to the range printed on that report.
Time of day is far less of an issue for DHEA-S than for testosterone or cortisol, because the sulfated form sits in the circulation at a steady concentration. That stability is a genuine advantage of the marker and one reason it is used as a snapshot of adrenal androgen output.
As two coordinates describing two different systems, not as one score. The question is never which number is higher, it is whether adrenal output and active androgen status each sit where they should for your age and sex, and whether the pattern across both matches your symptoms.
| Pattern on the report | What it may reflect | Sensible next step |
|---|---|---|
| Both within their ranges | Adrenal and gonadal output both in the usual adult band | Re-test on your normal schedule and read alongside symptoms |
| DHEA-S high, testosterone unremarkable | Adrenal androgen output running above the standard band | Discuss with a clinician, who may repeat the test and add related androgens and metabolic markers |
| DHEA-S low, testosterone unremarkable | Lower adrenal androgen output, common with increasing age | Review with a clinician alongside a morning cortisol value and your symptoms |
| Testosterone low, DHEA-S unremarkable | A gonadal or pituitary question rather than an adrenal one | Repeat morning testosterone with SHBG, LH and FSH, interpreted by a clinician |
| Both low | A broader hormonal or illness-related picture | Worth discussing with a clinician promptly, particularly alongside fatigue, weight loss or dizziness |
Every row here is an observation and a possible meaning, never a diagnosis. The same pattern can arise from ordinary variation in one person and from something that needs attention in another, and only a clinician who can see your history, your examination and your full panel can tell those apart.
Whenever a value sits outside the range printed on your report, and sooner if symptoms are changing quickly. A DHEA-S result well above the standard range, especially paired with rapid changes such as new facial or body hair growth, scalp hair thinning, deepening of the voice or a marked change in menstrual pattern, is worth discussing with a clinician promptly rather than waiting for the next scheduled draw. A very low value alongside persistent fatigue, unexplained weight loss, dizziness on standing or salt craving also warrants prompt discussion.
Suboptimal values that sit just outside an optimisation target, with no symptoms and no other abnormal markers, are a different conversation and usually a slower one, often starting with a repeat test at the same laboratory. Never ignore an out of range result, and never act on one alone.
This article is educational and is not medical advice. Bring your actual results, in full, to a clinician or licensed provider, who is the person to decide whether anything further is needed and what that should be.
For related reading, see does vitamin d affect testosterone for how a nutrient marker fits into the androgen picture, and how to lower dhea s if your adrenal androgen result came back above the standard range.
No. DHEA-S is a separate molecule that sits upstream of testosterone on the steroid pathway. It is a precursor the body can convert into androgens in small amounts inside tissues, rather than a diluted version of testosterone itself.
No. The two measure different things. DHEA-S reflects adrenal androgen output, while testosterone reflects the active androgen circulating in your blood. A panel looking at androgen status usually includes total testosterone, free testosterone and SHBG as well.
Not necessarily. Conversion happens inside tissues and varies from person to person and tissue to tissue, so a raised precursor value does not reliably predict the testosterone number. The only way to know your testosterone level is to measure it.
DHEA-S stays stable through the day, so timing matters far less than it does for testosterone or cortisol, and a single sample is usually enough. If testosterone is being drawn on the same requisition, a morning appointment is the usual approach. Follow whatever instructions your lab gives.
A lab reference range describes the spread seen across a broad population, which is wide for this marker because it changes so much with age and sex. An optimal range is a tighter optimisation target used for tracking. It is not a diagnostic cut-off, and sitting outside it is not a diagnosis.
The same precursor pathway can feed into both androgens and estrogens, depending on the tissue and the enzymes it carries. This is one reason the marker is interpreted alongside a wider hormone panel rather than read as an androgen number on its own.
No. Men generally run higher absolute values than women, and both sexes see levels fall with age, so results are read against a range that is specific to sex and appropriate for age. Compare your value to the range printed on your own report.
Bring the full report to a clinician or licensed provider, who decides whether to repeat the test, add related markers or look further. Do not ignore an out of range value, and do not act on a single number. If symptoms are changing quickly, raise it promptly.