Blood Test Tracking for IVF & Fertility Treatment Patients

Thyroid Optimisation Before and During IVF: Why TSH Targets Are Tighter

Thyroid function is among the clinically monitored factors in fertility treatment. Some reproductive endocrinologists have historically targeted a TSH below 2.5 mIU/L before IVF stimulation; however, the 2024 ASRM Practice Committee guideline states it is not recommended to screen or treat for asymptomatic subclinical hypothyroidism (TSH 2.5–4.0 mIU/L) to improve IVF outcomes, noting that no benefit on pregnancy or live-birth rates has been demonstrated; an exception applies when anti-TPO antibodies are present, where treatment may be considered if TSH exceeds 2.5 mIU/L. TSH optimisation in women with overt hypothyroidism remains appropriate.

Health3's optimal versus normal range feature helps you identify where your result falls relative to both the standard population reference range and any clinical target your specialist has discussed with you. The thyroid blood tests guide explains how TSH is interpreted in different clinical contexts.

Thyroid antibodies (TPO-Ab) — not currently on a dedicated Health3 biomarker page — are also commonly measured in fertility workups, as autoimmune thyroid disease can affect implantation even when TSH is technically normal. If your clinic has measured these, mention them when reviewing your full biomarker picture with your reproductive endocrinologist. The thyroid health topic in Health3 provides a useful overview of related markers.

FSH, AMH, Estradiol, and Progesterone: Clinic Markers Worth Understanding

FSH measured on cycle day 2 or 3 is a central indicator of ovarian reserve — the higher the basal FSH, the harder the pituitary is working to recruit follicles, which can indicate diminished ovarian reserve. Trending FSH across multiple cycles helps contextualise any single result and can help explain changes in stimulation protocol responses.

Anti-Müllerian hormone (AMH) — not on a dedicated Health3 biomarker page, but among the most informative ovarian reserve markers — is typically measured by your fertility clinic and does not require cycle timing. AMH, estradiol, and progesterone measured across the stimulation cycle are the core hormonal metrics your clinic monitors closely, and these are reviewed directly with your reproductive endocrinologist at each visit.

Prolactin is another marker commonly assessed in fertility workups but not on a dedicated Health3 page. Elevated prolactin can suppress ovulation and is a reversible cause of infertility. If elevated, your clinician will investigate further. Understanding that these clinic-ordered markers and the nutritional markers tracked in Health3 form complementary parts of the same picture — not competing systems — helps you use both effectively. The hormone blood test guide provides useful background on how these markers relate.

Folate, B12, Vitamin D, and Ferritin: The Nutritional Foundation of Fertility

Nutritional status provides the biochemical substrate on which fertility treatment operates. Plasma folate and B12 are central to the methylation cycle — the biochemical pathway driving DNA synthesis, cell division, and homocysteine metabolism. Both are directly relevant to embryo quality and implantation potential, and deficiency in either impairs the effectiveness of the other. The B vitamins blood test guide explains the biochemical relationship.

Studies suggest that vitamin D deficiency may be associated with lower IVF success rates, though the evidence base is still developing and causality is not firmly established. What is well-established is that vitamin D deficiency is common and correctable; supplementation to address deficiency carries low risk at recommended doses and has broader health benefits regardless of fertility outcomes. Most fertility clinicians check vitamin D as part of the pre-IVF nutritional workup, and Health3 allows you to track whether your levels are improving with supplementation over the weeks before treatment begins.

Ferritin is particularly relevant for women with conditions that cause heavy menstrual bleeding — endometriosis, fibroids, or PCOS with anovulatory cycles — which are disproportionately represented in IVF populations. Low ferritin before stimulation can worsen the fatigue and recovery burden of hormone treatments. The ferritin guide and the iron and anaemia topic provide practical context on what to target.

Organising Fertility Treatment Blood Work Across Cycles and Clinics

IVF treatment generates an exceptional volume of blood test data across a compressed timeframe: pre-stimulation baseline panels, monitoring draws during stimulation, post-retrieval results, and cycle-break follow-up tests. If you have undergone multiple cycles or changed clinics, this data may be scattered across different patient portals, paper reports, and laboratory systems.

Health3's OCR lab parser digitises results from any paper or PDF report, allowing you to build a unified biomarker history regardless of how many clinics or laboratories have been involved. The comparison tool places any two test dates side by side, making it straightforward to see how TSH, vitamin D, and ferritin have changed between cycles or before and after a supplementation protocol.

PDF export is particularly useful at fertility consultations — arriving with a complete, structured biomarker history means your reproductive endocrinologist can review nutritional status, thyroid trajectory, and FSH trend at a glance rather than relying on verbal recall. The blood test prep checklist helps ensure that cycle-day-specific tests (which often require accurate timing and sometimes fasting) are prepared for correctly. The testing frequency guide provides context on inter-cycle monitoring intervals.

Medical disclaimer: Health3 is a biomarker tracking and educational tool, not a medical device. All fertility treatment decisions — including stimulation protocols, medication adjustments, cycle timing, and embryo transfer planning — must be made by your reproductive endocrinologist or fertility specialist. Do not alter any fertility medication or supplement based on Health3 data without consulting your treating clinician.

Key Biomarkers to Track

Health Topics That Matter Most

• Hormonal Balance — FSH, estradiol, progesterone, AMH, and prolactin form the core of fertility hormonal assessment; tracking FSH trends alongside thyroid and nutrient status provides a fuller picture.
• Thyroid Health — Thyroid function directly affects fertility and early pregnancy; TSH targets during IVF treatment are typically tighter than standard ranges and warrant close monitoring.
• Energy & Fatigue — Nutritional deficiencies — particularly iron, folate, B12, and vitamin D — can compound the physical burden of IVF; tracking and correcting these supports the treatment process.
• Inflammation & Immune Health — Chronic low-grade inflammation may impair implantation in susceptible individuals; vitamin D and other anti-inflammatory markers contribute to the broader fertility health picture.

How Health3 Helps

• Biomarker Trending: Track how your biomarker values change over time with visual trend charts. Spot patterns that single snapshots miss.
• Test Comparison: Compare two blood tests side by side to see exactly what changed between draws.
• Optimal vs Normal Ranges: See whether your values are merely normal or truly optimal. Health3 distinguishes between standard lab ranges and evidence-based optimal ranges.
• PDF Export: Export your test results and full history as clean, branded PDF reports to share with your doctor.
• Biomarker Library: Browse detailed information on 184 supported biomarkers with age and gender-specific reference ranges.

Track Your Biomarkers With Health3

Scan your lab results, explore biomarker interactions, and track trends over time with the Health3 app.