Use these to ask more specific questions about your results.
| Marker | Lab Normal | Fertility Optimal | Why It Matters |
|---|---|---|---|
| TSH | 0.5–4.5 mIU/L | 0.5–2.5 mIU/L | Higher TSH associated with increased miscarriage risk even within lab normal range |
| Ferritin | 30–300 mcg/L | >70 mcg/L | Low ferritin impairs oocyte mitochondrial function and energy production |
| Vitamin D | >50 nmol/L | 100–150 nmol/L | Lab normal is the deficiency threshold — fertility optimal is significantly higher |
| HbA1c | <48 mmol/mol | <38 mmol/mol | Optimal glycaemic control supports oocyte quality and endometrial receptivity |
| Fasting insulin | <25 mIU/L | <8 mIU/L | Elevated insulin drives androgen excess and impairs follicular development |
| AMH | Varies by lab | Context-dependent | AMH measures quantity only — not quality. Low AMH does not equal infertility. |