Your 20s: Building the Baseline

Most women in their 20s feel fine. And that's exactly why this is the best time to get tested. You're establishing your personal baseline, the numbers your body considers "normal" when everything is working well.

At minimum, you want to check your thyroid panel (TSH, free T3, free T4), estradiol, progesterone, testosterone, and DHEA-S. These give you a snapshot of your reproductive and metabolic health. If you're on birth control, keep in mind that it can mask underlying hormone issues. Your numbers might look "normal" because the pill is doing the heavy lifting.

This is also a great time to check fasting insulin and hemoglobin A1c. Insulin resistance can develop silently long before glucose or A1C levels shift in bloodwork. And if you have a family history of PCOS, early screening can make a real difference. Early evaluation, including labs and imaging, can prevent years of frustration.

Don't forget about your nutrient levels either. Iron and ferritin are particularly important for women in their 20s, especially if you have heavy periods. Low iron doesn't just make you tired. It can affect your exercise tolerance, your immune system, and even your ability to concentrate. Vitamin D, B12, Magnesium and folate are also worth testing since deficiencies in these are surprisingly common even in younger women who eat well.

Your 30s: The Subtle Shifts Begin

Your 30s are where things start to quietly change. In some women, ovulation becomes less robust and luteal-phase progesterone may start to decline even before cycles become irregular. You might notice that your energy isn't what it used to be, or that your body composition is shifting in ways you can't explain. This isn't always hormonal in the traditional sense. It's driven by early changes in insulin sensitivity, accumulating stress load, declining sleep quality, and the gradual loss of muscle mass that makes it easier for your body to store fat centrally. These factors tend to compound each other, and because none of them show up as a single dramatic event, they're easy to dismiss as "just getting older.”

This is the decade to get proactive. Beyond the basics, add in a metabolic panel that includes fasting glucose, insulin, lipids, and inflammatory markers like hs-CRP. Vitamin D, B12, and ferritin are also worth checking since suboptimal levels are common in women with heavy periods, vegetarian diets, high stress, and limited sun exposure.

If you're trying to conceive, you'll want AMH (anti-Mullerian hormone) to get a sense of your ovarian reserve. You also don't want to overlook your thyroid. Most fertility specialists aim for a TSH below 2.5 prior to pregnancy. Even mild thyroid dysfunction can interfere with ovulation and early pregnancy outcomes. And if pregnancy isn't on your radar, don't skip testing entirely. Prevention in your 30's means preserving muscle mass, protecting metabolic health, catching thyroid shifts early, addressing iron depletion before anemia occurs, and identifying insulin resistance before A1c climbs. A comprehensive testing plan in your 30s is one of the smartest investments in your health.

Perimenopause: The Rollercoaster Years

Perimenopause most commonly begins in the 40’s, though subtle hormonal shifts can start earlier for some women. This is when your estrogen and progesterone levels start fluctuating unpredictably. One month, you feel great. The next month, you're dealing with hot flashes, insomnia, brain fog, and anxiety that came out of nowhere.

Because hormone levels fluctuate widely during perimenopause, a single lab draw doesn’t always capture the full picture. Symptom patterns and trends over time are more informative than one isolated result. (p.s. this is why we treat the symptoms not the number on the paper) Tracking trends over time, especially changes in cycle length, luteal progesterone, and gradually rising FSH can help provide context.

Thyroid issues also tend to surface during perimenopause. Thyroid dysfunction can mimic worsening symptoms like fatigue, mood changes, and brain fog. A full thyroid panel can help rule out contributing factors.

Perimenopause is not just about hot flashes. It is when we see increased visceral fat, rising LDL, ApoB, worsening insulin sensitivity, increased cardiovascular risk. Even when women are doing a lot of the “right” things with diet and exercise. This is the stage where cardiometabolic risk begins to climb, making lipid panels, fasting insulin, and inflammatory markers especially important.

After Pregnancy: The Recovery Window

Having a baby flips your hormone profile upside down. Hormones shift dramatically after delivery, and while many normalize within weeks, full physiologic recovery can take several months. Sometimes longer, especially if breastfeeding. It's important to understand that this is a physiologic reset period, and not every new mom needs a deep dive into hormones right away. Many of the ranges you'd see on bloodwork during this window are expected to look abnormal, particularly if you're nursing.

That said, thyroid disorders are especially common postpartum. Up to 10% of women develop postpartum thyroiditis, and it often gets mistaken for normal exhaustion or postpartum depression. Routine hormone testing isn't standard postpartum care, but targeted testing makes sense if symptoms persist beyond the expected recovery window or feel like more than the usual adjustment. If you've recently had a baby and something feels off beyond what recovery should look like, testing your thyroid is a smart starting point.

Menopause and Beyond

Technically, menopause itself is a single point in time. It's the day that marks exactly 12 months since your last period. Everything before that is perimenopause, and everything after is post-menopause, which is where you'll spend the rest of your life. Most people use "menopause" to describe the whole transition, but the distinction matters because these hormonal shifts begin during perimenopause and often intensify afterward. Lower estrogen levels mean bone loss starts to accelerate, cardiovascular disease risk begins to climb, and metabolic changes become harder to ignore. These changes typically begin in perimenopause and can worsen, often significantly, in the post-menopausal years.

At this stage, your panel should include testosterone, thyroid markers, lipid panel, fasting glucose, insulin, vitamin D, calcium, and bone markers like CTX and osteocalcin. Estradiol and FSH can confirm menopausal status when cycles are unclear and are useful for monitoring if hormone therapy is being used, but if you've gone 12 months without a period, there's no need for routine confirmation testing.

If you're on hormone replacement therapy, regular testing helps your provider fine-tune your dosing. It's not a "set it and forget it" situation. Your provider needs data to adjust your protocol, and that data comes from regular blood draws.

The markers that matter most after menopause go beyond hormones. Bone turnover markers like CTX and osteocalcin can help assess bone remodeling activity and monitor response to therapy. DEXA scans remain the primary screening tool for bone density. Cardiovascular markers like ApoB and hs-CRP become critical because the protective effect of estrogen is gone. And metabolic markers like fasting insulin take on new importance as insulin resistance becomes more common with age.

What a Complete Hormone Panel Actually Includes

Here’s a reference for the categories that matter across life stages. Not every marker is necessary for every woman at every visit, but these are the core systems worth evaluating. Reproductive hormones include estradiol, progesterone, total and free testosterone, DHEA-S, FSH, and LH. Thyroid markers include TSH, free T3, free T4, and thyroid antibodies. Metabolic markers include fasting glucose, fasting insulin, hemoglobin A1c, and a complete lipid panel. Nutrient markers include vitamin D, B12, folate, ferritin, and magnesium. Inflammatory markers include hs-CRP and homocysteine.

No single marker tells the whole story. It's the pattern across all of them that gives you and your provider the real picture.

The Geviti Approach to Women's Hormone Testing

Most women don't get a fraction of the testing they actually need through their primary care doctor. It's not that doctors don't care. They're just working within systems that prioritize screening and managing active conditions.

Geviti's comprehensive biomarker panel covers over 100 markers, including the full hormone, metabolic, and nutrient panels that matter at every stage of life. A licensed phlebotomist comes to your home so there's no waiting room. And Geviti's AI-powered analysis doesn't just tell you if your results are "normal." It looks at patterns across all your markers and helps you understand what's actually going on.

The truth is, many standard doctor visits aren't set up to give women what they actually need when it comes to hormone testing. The visits are short, the panels are limited, and the "reference ranges" are based on averages that might not reflect what's optimal for you specifically. Taking ownership of your testing and working with a platform that offers comprehensive analysis can change the game completely.

Your hormones are going to change. That's not optional. But understanding those changes and getting ahead of them? That part is entirely up to you.

References

Forrest, K.Y. & Stuhldreher, W.L. (2011). "Prevalence and correlates of vitamin D deficiency in US adults." Nutrition Research, 31(1), 48-54. Based on NHANES 2005-2006 data showing 41.6% deficiency prevalence.

American Thyroid Association. "Postpartum Thyroiditis." thyroid.org. Reports 5-10% prevalence in postpartum women.

Cleveland Clinic. "Perimenopause: Age, Stages, Signs, Symptoms & Treatment." my.clevelandclinic.org.

Endocrine Society. "Menopause and Bone Loss." endocrine.org. Reports up to 20% bone density loss in 5-7 years post-menopause.

StatPearls (NCBI Bookshelf). "Polycystic Ovarian Syndrome." ncbi.nlm.nih.gov. Reports 6-10% prevalence using NIH criteria.

Office on Women's Health. "Menopause Basics." womenshealth.gov.