Androsterone Serum
It measures a downstream androgen metabolite to help assess steroid hormone patterns, with convenient Quest-based ordering through Vitals Vault.
This panel bundles multiple biomarker tests in one order—your report explains how results fit together.
Androsterone is one of the “downstream” products your body makes when it breaks down androgens (hormones with masculinizing effects, such as testosterone). A serum androsterone test gives you a snapshot of that metabolism in your bloodstream.
This marker is not usually a first-line hormone test. It becomes more useful when you are trying to explain symptoms that could relate to androgen balance, or when earlier testing (like testosterone, DHEA-S, or 17-hydroxyprogesterone) leaves unanswered questions.
Because androsterone sits later in the pathway, your result is best interpreted alongside other hormones and your clinical picture, not as a standalone diagnosis.
Do I need a Androsterone Serum test?
You might consider an androsterone serum test if you are working through symptoms that can overlap with androgen imbalance, such as new or worsening acne, increased facial or body hair growth, scalp hair thinning, irregular menstrual cycles, or changes in libido. In men, it may come up when you are evaluating androgen metabolism in the context of symptoms, fertility planning, or hormone therapy monitoring.
This test can also be helpful when you and your clinician are trying to localize where androgen signals may be coming from (ovaries/testes vs adrenal glands) or how your body is converting and clearing androgens. It is sometimes used as a follow-up when common markers look “normal,” but symptoms persist and you want a broader view of steroid hormone pathways.
You may not need this test if you are just starting a hormone workup. Many people get clearer first answers from total and free testosterone, DHEA-S, SHBG, LH/FSH, estradiol, and 17-hydroxyprogesterone, then add androsterone if the pattern is still unclear.
Testing can support clinician-directed care by adding objective data to your symptom history, medications, and exam findings, but it cannot diagnose a condition by itself.
This is a laboratory-developed test performed in a CLIA-certified lab; results should be interpreted in clinical context and are not a standalone diagnosis.
Lab testing
Order Androsterone Serum through Vitals Vault and complete your draw at a nearby lab.
Schedule online, results typically within about a week
Clear reporting and optional clinician context
HSA/FSA eligible where applicable
Get this test with Vitals Vault
Vitals Vault lets you order Androsterone Serum testing without a separate doctor visit, then complete your blood draw at a participating lab location. Your report is delivered in a format that makes it easier to review trends over time, especially if you are repeating testing after a treatment change.
If you want help making sense of your number, PocketMD can walk you through what androsterone represents, what “low vs high” often means, and which companion labs typically clarify the story. That can be useful when you are deciding whether to retest, broaden to a hormone panel, or bring specific questions to your clinician.
This approach works best when you treat the result as one piece of a bigger map: symptoms, cycle timing (if applicable), medications, and related hormone markers.
- Order online and complete your draw through a national lab network
- Clear next-step guidance with PocketMD when you want it
- Designed for retesting and trend tracking, not one-off numbers
Key benefits of Androsterone Serum testing
- Adds a downstream view of androgen metabolism, not just hormone “production” levels.
- Helps explain symptoms when testosterone and DHEA-S do not match how you feel.
- Supports a more complete androgen pathway review alongside 17-hydroxyprogesterone and other steroids.
- Can be useful for monitoring how androgen patterns shift after medication or hormone-therapy changes.
- May help differentiate whether a pattern looks more adrenal-driven or gonadal-driven when paired with companion labs.
- Provides an additional data point when evaluating hyperandrogenism patterns (such as acne, hirsutism, or cycle disruption).
- Makes it easier to plan retesting and interpretation with PocketMD and your clinician using the same lab method over time.
What is Androsterone Serum?
Androsterone is a metabolite produced when your body processes androgens through steroid hormone pathways. In simple terms, it is one of the “end products” that reflects how androgens are being converted and cleared.
A serum androsterone test measures the amount of androsterone circulating in your blood at the time of the draw. Because it sits downstream, it can sometimes reveal patterns that are not obvious from measuring only upstream hormones like testosterone or DHEA-S.
Your result does not directly tell you how much testosterone you are making, and it is not a direct measure of “androgen activity” in tissues. Instead, it is best viewed as a clue about pathway flow and metabolism, which is why it is often interpreted with other steroid markers.
Where androsterone comes from
Androsterone can be formed from testosterone and other androgen precursors through enzymatic steps in the liver and other tissues. Both adrenal and gonadal hormone production can contribute to the pool of metabolites you see in blood, which is why companion testing matters.
Why serum (blood) testing can be different from urine testing
Some clinicians use urine steroid metabolite testing to look at 24-hour output patterns. Serum testing is a snapshot, which can be easier to order and repeat, but it may be more sensitive to timing, recent medication use, and short-term physiologic changes.
How this fits into an androgen workup
If you are evaluating androgen-related symptoms, androsterone is usually not the first test. It is more often a second-step marker to refine interpretation when initial labs are borderline, conflicting, or do not explain symptoms.
What do my Androsterone Serum results mean?
Low androsterone levels
A low androsterone result can mean lower overall androgen production, reduced conversion down this pathway, or simply that the timing of the draw captured a lower point. If you also have low testosterone and/or low DHEA-S, the pattern may fit reduced androgen availability from adrenal or gonadal sources. If upstream hormones are normal but androsterone is low, your clinician may consider whether medications, liver metabolism differences, or assay timing could be influencing the snapshot. Low results are interpreted based on symptoms and the rest of your hormone panel rather than treated in isolation.
Optimal (in-range) androsterone levels
An in-range result generally suggests your androgen metabolism through this pathway is not obviously elevated or suppressed at the time of testing. That does not automatically rule out androgen-related symptoms, because tissue sensitivity, SHBG levels, and other metabolites can still create symptoms even when a single marker is normal. If you are monitoring treatment, a stable in-range value can be reassuring when it matches symptom improvement and other labs. The most useful interpretation comes from looking at trends and related markers rather than one number.
High androsterone levels
A high androsterone result can reflect increased androgen production upstream, increased conversion into this metabolite, or both. When paired with elevated testosterone, DHEA-S, or other androgens, it can support a pattern of androgen excess that may align with acne, hirsutism, or cycle changes. If androsterone is high while common upstream markers are not clearly elevated, your clinician may look for pathway-specific patterns, medication effects, or the need for additional steroid testing. Markedly high or persistent elevations deserve clinician review, especially if symptoms are new, rapidly worsening, or accompanied by other concerning signs.
Factors that influence androsterone
Your result can shift with age, sex, menstrual cycle timing, and overall hormone production from the adrenal glands and gonads. Medications and hormones can also change the pattern, including oral contraceptives, testosterone therapy, anti-androgens, glucocorticoids, and some seizure medications. Liver function and body composition may influence steroid metabolism and clearance, which can affect downstream metabolites like androsterone. Finally, lab method and reference ranges vary, so you should interpret your value using the range printed on your report and, when possible, retest using the same lab for clean trend comparisons.
What’s included
- Androsterone, Serum
Frequently Asked Questions
What is androsterone on a blood test?
Androsterone is a downstream androgen metabolite. A blood (serum) test measures how much is circulating at the time of your draw, which can provide clues about androgen metabolism when interpreted with other hormones.
Do I need to fast for an Androsterone Serum test?
Fasting is not commonly required for androsterone alone, but your order may be bundled with other labs that do require fasting. Follow the collection instructions on your lab order, and try to keep timing consistent if you are retesting.
What does high androsterone mean in women?
High androsterone can fit an androgen-excess pattern, especially if you also have elevated testosterone or DHEA-S and symptoms like acne, unwanted hair growth, or irregular cycles. It is not diagnostic by itself, so clinicians usually confirm the pattern with companion hormones and clinical evaluation.
What does low androsterone mean?
Low androsterone can reflect lower androgen production, reduced conversion down this pathway, medication effects, or timing-related variation. It is usually interpreted alongside testosterone, DHEA-S, SHBG, and your symptoms rather than treated as a standalone problem.
How is androsterone different from testosterone or DHEA-S?
Testosterone and DHEA-S are upstream androgens (closer to production). Androsterone is a downstream metabolite that can reflect how your body is processing and clearing androgens, which sometimes helps when upstream values do not explain symptoms.
When should I retest androsterone?
Retesting depends on why you tested in the first place. If you are monitoring a medication or hormone-therapy change, many clinicians recheck in weeks to a few months, using similar draw timing and the same lab method to make trends easier to interpret.
Can medications affect androsterone results?
Yes. Hormonal contraception, testosterone therapy, anti-androgens, glucocorticoids, and other medications can shift steroid pathways and downstream metabolites. Always list your medications and timing when you review results with your clinician.