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Upgrade your Proov kit to measure a fifth hormone—and unlock the next generation of fertility tracking. Why the 5th Hormone Matters When you track 5 key fertility hormones (not just 3 or 4), you get: Up to 6 fertile days — 4 more than standard ovulation tests Ovulation confirmation up to 2 days sooner than temperature-based methods 2X higher chance of catching your LH surge by measuring both forms of LH (intact LH + LH beta)
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🇺🇸 Ship from USA · On Agora since 2025
$110.99