Introduction
“Is it too late for my age?” “Is there any point if my AMH is low?” These are common concerns when considering egg freezing. The short answer: egg freezing can still be meaningful even with reduced ovarian function. In fact
understanding your current status and taking feasible steps now is the most realistic way to expand future options. This guide organizes the big picture—AMH
age
menstrual phases
and scheduling.
What AMH Tells You (Ovarian Reserve at a Glance)
AMH reflects your remaining egg “stock.” It measures quantity
not quality
but it’s a cornerstone metric for planning retrievals.
| AMH（ng/mL） | 状態の目安 | 特徴 |
|---|---|---|
| 3.0〜4.0 | 卵巣予備能が高い | 1回で10〜15個以上採れる可能性 |
| 1.0〜2.0 | やや低下傾向 | 採卵数はやや少なめ |
| 1.0未満 | ストックが少ない | 複数サイクル前提で計画 |
Individual variability is large. Age alone does not determine AMH; young people can have low values and vice versa.
Age and Egg ‘Quality’: Approximate Rate of Euploid Embryos
Chromosomal abnormality risk rises with age. This is why outcomes can differ even when the same number of eggs is frozen.
| 年齢層 | 正常胚割合（目安） |
|---|---|
| 30〜34歳 | 約50〜60％ |
| 35〜39歳 | 約30〜40％ |
| 40〜42歳 | 約20〜30％ |
Understand the Ovarian Rhythm (Follicular & Luteal Phases)
- [Follicular] Day 1 of menses to ovulation (~14 days): multiple follicles grow. Stimulation typically starts on cycle day 2–3.
- [Luteal] Ovulation to next menses (~14 days): the endometrium matures; ovarian stimulation is generally not performed.
Clinic Visits & Treatment Timeline (One Cycle)
| ステップ | 内容 | 期間の目安 |
|---|---|---|
| 初回診察・検査 | ホルモン測定、超音波で卵胞数確認 | 約1〜2週間 |
| 刺激期間 | 10〜14日間の自己注射＋数回の通院 | 約2週間 |
| 採卵手術 | 30〜60分、麻酔後に休息 | 当日〜翌日 |
| 全体期間 | 1サイクルの完結目安 | 約1ヶ月前後（個人差あり） |
Visits typically take 20–30 minutes, often scheduled in the morning. Results are shared the same day or the next.
Key Considerations for Age 40+
- Higher aneuploidy rates mean more eggs are typically needed.
- Plan for 2–3 cycles if one retrieval may not yield enough eggs.
- Securing quantity increases the chance of capturing high-quality eggs.
Summary
Even with reduced ovarian function
egg freezing is a practical safeguard you can take now. The lower the AMH
the greater the value of acting early; the older you are
the more important it is to secure numbers. Understand your cycle and plan realistically to preserve your future options.