Androstenedione Biomarker Testing
Androstenedione testing checks an androgen precursor to evaluate hormone balance and androgen excess; order through Vitals Vault with Quest lab access.
With Vitals Vault, you have access to a comprehensive range of biomarker tests.
Androstenedione is a hormone your body uses to make other androgens and estrogens. Because it sits “upstream” in hormone production, it can help explain patterns that a single testosterone result does not fully capture.
This test is most often used when you are working through signs of androgen excess (like acne, unwanted hair growth, or scalp hair thinning), irregular periods, fertility questions, or when your clinician wants to understand whether the adrenal glands or ovaries are contributing to a hormone imbalance.
Your number is only one piece of the picture. The most useful interpretation comes from pairing it with related labs and your symptoms, rather than trying to self-diagnose from a single value.
Do I need a Androstenedione test?
You may benefit from an androstenedione test if you have symptoms that suggest higher-androgen signaling, especially when the pattern is not clearly explained by total testosterone alone. Common reasons include persistent acne, increased facial or body hair (hirsutism), scalp hair thinning, irregular or absent periods, or difficulty with ovulation and fertility.
This test is also used when your clinician is trying to localize where excess androgens may be coming from. Androstenedione is produced in both the adrenal glands and the ovaries, so it can add context alongside DHEA-S (more adrenal-leaning) and testosterone (often more ovarian/peripheral conversion).
You might also see it ordered in evaluations for congenital adrenal hyperplasia (CAH) variants, adrenal or ovarian tumors (usually when levels are markedly elevated or symptoms are rapidly progressive), or for monitoring response to treatment plans aimed at lowering androgen production.
If you are pregnant, on hormonal contraception, using testosterone therapy, or taking steroids, your result can shift for reasons unrelated to a new disease process. Testing is most helpful when it supports clinician-directed care and is interpreted with timing, medications, and companion labs in mind.
This is a blood test performed in CLIA-certified laboratories; results are for education and clinical discussion and are not a standalone diagnosis.
Lab testing
Ready to order androstenedione testing through Vitals Vault?
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
If you want an androstenedione result you can actually use, the goal is to pair the number with the right context: your cycle timing (if applicable), your medications, and a few companion hormones that help explain why it is high or low.
With Vitals Vault, you can order lab testing through the Quest network and view your results in one place. Many people use this to confirm a clinician’s plan, to establish a baseline before making a change, or to track whether a treatment is moving hormones in the intended direction.
When you want help making sense of the pattern, PocketMD can walk you through what your result may mean, what follow-up questions to ask, and which related labs are commonly used to clarify the source of androgen changes.
If you are planning a retest, you can also use Vitals Vault to keep your testing consistent over time, which makes trends easier to interpret than one-off results from different labs.
- Order online and test at a Quest location
- PocketMD guidance for next steps and companion labs
- Designed for trending results over time, not one-off snapshots
Key benefits of Androstenedione testing
- Adds an upstream androgen marker that can clarify symptoms when testosterone alone is inconclusive.
- Helps differentiate adrenal-leaning vs ovarian-leaning androgen patterns when paired with DHEA-S and testosterone.
- Supports evaluation of irregular cycles, ovulatory dysfunction, and PCOS-like presentations in the right context.
- Can flag unusually high androgen production that may warrant prompt clinical follow-up and targeted imaging or specialty care.
- Provides a baseline before starting or adjusting therapies that affect androgen production or conversion.
- Improves interpretation of acne, hirsutism, and hair thinning by linking symptoms to measurable hormone pathways.
- Makes retesting and trend review easier when you keep timing and companion labs consistent through Vitals Vault.
What is Androstenedione?
Androstenedione is a steroid hormone that acts as a precursor in your body’s sex-hormone pathway. Your adrenal glands and gonads (ovaries or testes) produce it, and your tissues can convert it into testosterone and estrone/estradiol depending on enzymes and overall hormonal signaling.
Because it sits between earlier adrenal hormones and downstream sex hormones, androstenedione can behave like a “traffic marker” for androgen production. A higher value can reflect increased production, increased stimulation (for example, from ACTH in the adrenal pathway), or shifts in how your body is converting hormones. A lower value can occur when overall steroid production is reduced or when medications suppress production.
Labs report androstenedione in specific units with method-dependent reference ranges, so the most meaningful read is how your value compares with the lab’s range and how it fits with your other hormones and symptoms.
Where it comes from
In people with ovaries, androstenedione can be produced by the ovaries and the adrenal glands, and it can also be formed in peripheral tissues. In people with testes, it is produced in the testes and adrenals. The balance between sources varies by age, body composition, and endocrine signaling.
How it relates to PCOS and hyperandrogenism
In polycystic ovary syndrome (PCOS) and other hyperandrogen states, androstenedione may be elevated along with (or sometimes more than) testosterone. It is not diagnostic by itself, but it can support a broader evaluation that includes cycle history, metabolic markers, and other reproductive hormones.
Why timing can matter
Androstenedione can vary with time of day and, in cycling individuals, across the menstrual cycle. If you are retesting, using similar timing (often morning) and consistent cycle-day guidance from your clinician can make your trend more interpretable.
What do my Androstenedione results mean?
Low androstenedione levels
A low result usually means your body is producing less of this androgen precursor at the time of testing. This can be seen with suppression of adrenal or gonadal steroid production, which may occur with certain medications (including glucocorticoids) or with some forms of adrenal or pituitary dysfunction. In many people, a mildly low value is not clinically meaningful unless it matches symptoms and other hormone findings. Your clinician will typically interpret it alongside cortisol/ACTH context, DHEA-S, testosterone, and reproductive hormones.
Optimal (in-range) androstenedione levels
An in-range result suggests androstenedione production is within the laboratory’s expected range for your sex and age. If you still have symptoms of androgen excess, your clinician may look at other drivers such as free testosterone (influenced by SHBG), DHEA-S, 17-hydroxyprogesterone, prolactin, thyroid function, or insulin resistance. In-range does not rule out PCOS or other endocrine conditions, but it can narrow the differential and guide which follow-up tests are most useful. Consistent, in-range values over time can also be reassuring when monitoring treatment.
High androstenedione levels
A high result means your body is making or converting more androstenedione than expected for the lab’s reference range. Common clinical contexts include PCOS-related hyperandrogenism, adrenal-driven androgen excess, or less commonly enzyme-pathway differences such as nonclassic CAH. If the elevation is marked or symptoms are rapidly progressing (for example, sudden severe acne, voice deepening, or quick-onset hirsutism), clinicians may prioritize prompt follow-up to rule out rarer causes. The next step is usually pattern-based: comparing androstenedione with DHEA-S, testosterone (total and/or free), and 17-hydroxyprogesterone, plus clinical history.
Factors that influence androstenedione
Cycle phase, time of day, and recent illness or physiologic stress can shift androstenedione. Hormonal contraception, fertility medications, testosterone therapy, anti-androgens, and glucocorticoids can all change results, sometimes substantially. Body weight changes and insulin resistance can influence androgen production and SHBG, which affects how androgen-related symptoms show up even when a single marker looks only mildly abnormal. Lab methods and reference ranges vary, so comparing results across different labs can be misleading unless you focus on trends within the same system.
What’s included
- Androstenedione
Frequently Asked Questions
What is androstenedione used to test for?
Androstenedione is used to evaluate androgen production and hormone balance, especially when you have symptoms like acne, hirsutism, irregular periods, or fertility concerns. It can support evaluation for PCOS-related hyperandrogenism, adrenal androgen excess, and certain adrenal enzyme pathway conditions when interpreted with other labs and your clinical history.
Do I need to fast for an androstenedione blood test?
Fasting is not usually required for androstenedione. However, if your blood draw includes metabolic labs that often accompany hormone testing (like glucose or insulin), your clinician or the lab order may request fasting. If you are retesting, try to keep conditions similar each time (morning vs afternoon, fasting vs non-fasting) so trends are easier to compare.
What’s the difference between androstenedione and testosterone?
Androstenedione is a precursor hormone that your body can convert into testosterone (and into estrogens). Testosterone is a downstream androgen that more directly reflects androgen activity, while androstenedione can help show whether the pathway is “upregulated” earlier in production. Looking at both can clarify whether androgen excess is broad or concentrated in one part of the pathway.
Can PCOS cause high androstenedione?
Yes. Many people with PCOS have elevated androgens, and androstenedione can be one of them. A high result does not diagnose PCOS by itself, but it can support the overall picture when combined with menstrual history, ovulation patterns, ultrasound findings when appropriate, and metabolic markers.
When should I retest androstenedione?
Retesting depends on why you tested in the first place. If you are monitoring a treatment change, clinicians often recheck in roughly 6–12 weeks to allow hormones to reach a new steady state, but the best timing varies by medication and goals. If cycle timing matters for your situation, ask whether to test on a specific cycle day and keep that consistent for follow-ups.
Can birth control affect androstenedione results?
Yes. Hormonal contraception can change ovarian hormone production and can also affect related markers like SHBG, which influences free testosterone and symptom expression. If you are testing to evaluate baseline androgen status, your clinician may prefer testing off hormonal contraception for a period of time, but you should not stop any medication without medical guidance.