Only 13% of cycles are 28 days—this means ovulation is not always day 14. It can be so unpredictable, especially if you’re over 35, have PCOS or irregular periods.
Healthy follicle development is what kickstarts ovulation. But did you know that if your body isn’t building up enough estrogen or FSH at the right time, it could be a sign that ovulation may not occur?
Get ahead of ovulation with Ultra4’s Egg Prep Scan™—track E3G and FSH levels in the early days of your cycle, to see if the eggs are developing right, and understand your chances of getting pregnant that month.
What is Egg Prep Scan™?
If you’re trying to get pregnant, Egg Prep Scan™ lets you see if your body is getting ready to ovulate—in real time.
With Ultra4, the only wand tracking 4 hormones in 1 with lab-accurate FluoMapping™ Technology, and this advanced hormone scanning, you can finally track your follicles live, as your cycle unfolds—not just after ovulation has (or hasn’t) happened.
Instead of countless negative OPKs or generic labels like “Low Fertility” that you see on other trackers, Mira’s Egg Prep Scan™ gives you real E3G and FSH hormone numbers. This will show if your body is gearing up for ovulation, or explain why ovulation is happening much later—or not at all.
Why Early Follicle Tracking Matters for TTC
Egg Prep Scan™ helps you see if your eggs are prepping for ovulation—before you miss your window. With technology that is lab-grade, 7x more accurate than other trackers, and the only one on the market using fluorescent hormone detection, you can time sex right, and discuss any concerns with your doctor early in the cycle, and faster in your baby journey—not after months of negative pregnancy tests.
Ditch Ovulation Guesswork—even with Irregular Cycles
Unlike cheap OPKs that only detect LH on a strip when ovulation is potentially already happening, Egg Prep Scan™ monitors E3G and FSH levels continuously so you can understand your body’s prep for ovulation in real-time—up to 6x more sensitive than other fertility trackers.** This—and our Egg Count Intelligence™ technology—gives you more clarity, especially if you have unpredictable cycles, PCOS, or are trying to conceive during perimenopause—so you can act at the right moment, and stop feeling stressed by uncertainty each month.
Spot Potential Fertility Challenges Sooner
Egg Prep Scan™ doesn’t just tell you if ovulation is going to happen—it helps you see why it might not. By tracking E3G and FSH from the very start of your cycle, it gives early clues about whether your follicles are developing as they should. This means you can spot issues like weak follicle growth, low estrogen rise, or signs of diminished reserve, before you lose precious cycles trying. Track Hormones With Mira
Know When to Act
If you’re trying to conceive, especially over 35 and during perimenopause, every cycle counts. Egg Prep Scan™ gives you the clarity to know when your body is on track—and when it may be time to seek help. By understanding your follicle development in real-time, you can have more productive conversations with your doctor, consider treatment, and take action sooner.
Make every cycle count with smarter, earlier tracking.
Mira’s technologies are built by scientists to give you the clearest, most personalized picture of your fertility and hormone health.
Egg Prep Scan™ gives you the power to see what’s happening at the very start of your cycle, making you are the most informed and prepared for TTC than you’ve ever been before—no more waiting, guessing, or missing your chance.
Instead of wondering whether this month could be the month, you’ll have real insights into how ready your body is to ovulate, to guide your timing and decisions—with Ultra4’s lab-grade hormone tracking, helping users conceive 10x faster, from home.
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*Based on a 2025 lab study by MiraLabs comparing Mira to other popular at-home fertility trackers for LH, FSH, E3G, and PdG. “7× more accurate” refers to average alignment with lab results (range 2×-18× for different hormones);
**Based on a 2025 lab study by MiraLabs comparing Mira to other popular at-home fertility trackers for LH, FSH, E3G, and PdG. “up to 6× more sensitive” is based on lower detection limits (range from 1-2× for PdG to 6× for E3G). Individual results may vary. Mira is not a diagnostic or contraceptive device.
