AMH Level Calculator
Interpret your AMH (Anti-Mullerian Hormone) test results. Understand ovarian reserve levels by age and what your AMH means for fertility.
Medical Disclaimer
This calculator provides general interpretation of AMH levels. AMH is just one factor in fertility assessment. Always discuss your results with a reproductive endocrinologist or fertility specialist who can consider your complete medical history.
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About This Calculator
Anti-Mullerian Hormone (AMH) is a key biomarker for assessing ovarian reserve - the quantity of eggs remaining in your ovaries. Understanding your AMH level helps you and your fertility specialist make informed decisions about family planning and treatment options.
What AMH Tells You: AMH is produced by small follicles in the ovaries and reflects the size of the remaining egg pool. Unlike FSH or estrogen, AMH levels remain relatively stable throughout the menstrual cycle, making it a reliable and convenient test that can be drawn on any cycle day.
What AMH Does NOT Tell You:
- Egg quality - primarily determined by age
- Ability to conceive naturally - low AMH doesn't mean infertility
- Timing of menopause - only loosely correlated
- Pregnancy success - other factors matter more
Why AMH Testing Matters:
- Predicts response to IVF stimulation
- Helps personalize treatment protocols
- Identifies risk of ovarian hyperstimulation (OHSS)
- Assists in family planning decisions
- May indicate conditions like PCOS (when very high)
Interpreting Your Results: AMH levels must be interpreted in the context of your age, as what's normal at 25 differs significantly from what's expected at 40. This calculator provides age-specific interpretation to help you understand where you fall.
For fertility treatment planning, see our IVF Success Calculator. To plan egg freezing, try our Egg Freezing Calculator.
How to Use the AMH Level Calculator
- 1Enter your AMH test result from your lab report.
- 2Select the unit (ng/mL is US standard, pmol/L is international).
- 3Enter your age for personalized interpretation.
- 4Review your category (Low, Normal, High, etc.).
- 5Check the IVF response prediction if planning treatment.
- 6Compare your result to age-specific reference ranges.
- 7Note the expected egg retrieval range for IVF.
- 8Read the important considerations about AMH limitations.
- 9Discuss results with your fertility specialist.
- 10Consider retesting if results seem inconsistent.
Understanding AMH and Ovarian Reserve
AMH is produced by granulosa cells in small ovarian follicles.
What AMH Represents
AMH reflects your ovarian reserve - the pool of primordial and small antral follicles in your ovaries. Each follicle contains one egg.
Key concepts:
- Women are born with all their eggs (~1-2 million)
- By puberty: ~300,000-400,000 eggs remain
- Each month: ~1,000 eggs are lost
- Only ~400-500 will ever ovulate
AMH vs. Other Fertility Tests
| Test | Measures | Timing | Best For |
|---|---|---|---|
| AMH | Follicle pool size | Any day | Overall reserve |
| FSH | Pituitary signal | Day 3 | Ovarian function |
| Estradiol | Ovarian response | Day 3 | Combined with FSH |
| AFC | Visible follicles | Day 3 | IVF planning |
AMH Stability
Unlike FSH and estradiol, AMH:
- Remains stable throughout the menstrual cycle
- Can be tested on any day
- Is not affected by current cycle medications
- Shows gradual decline over months/years
AMH Decline Pattern
AMH declines naturally with age:
- Peak: Early 20s
- Gradual decline: 25-35
- Accelerated decline: 35-40
- Very low: 40+
The rate of decline varies significantly between individuals.
AMH Reference Ranges by Age
AMH must be interpreted relative to your age.
General Reference Ranges (ng/mL)
| Category | Range | Interpretation |
|---|---|---|
| Very Low | < 0.3 | Significantly diminished reserve |
| Low | 0.3 - 1.0 | Below average reserve |
| Normal | 1.0 - 3.5 | Average reserve |
| High | 3.5 - 5.0 | Above average reserve |
| Very High | > 5.0 | May indicate PCOS |
Age-Specific Expectations
Age 25-30:
- Average AMH: 2.5-4.0 ng/mL
- Low: < 1.5 ng/mL
- Most women have excellent reserve
Age 31-35:
- Average AMH: 1.5-3.0 ng/mL
- Low: < 1.0 ng/mL
- Beginning of natural decline
Age 36-40:
- Average AMH: 0.8-2.0 ng/mL
- Low: < 0.5 ng/mL
- Accelerated decline period
Age 41-45:
- Average AMH: 0.3-1.0 ng/mL
- Low: < 0.2 ng/mL
- Significantly reduced reserve
Unit Conversion
- ng/mL × 7.14 = pmol/L
- pmol/L ÷ 7.14 = ng/mL
Example: 2.0 ng/mL = 14.3 pmol/L
AMH and IVF Outcomes
AMH strongly predicts response to ovarian stimulation.
Expected Egg Retrieval by AMH
| AMH (ng/mL) | Expected Eggs | Response Category |
|---|---|---|
| < 0.5 | 1-4 | Poor responder |
| 0.5-1.0 | 4-8 | Low responder |
| 1.0-2.5 | 8-12 | Normal responder |
| 2.5-3.5 | 12-18 | Good responder |
| > 3.5 | 15-25+ | High responder |
Protocol Implications
Low AMH (< 1.0):
- Higher medication doses may be needed
- May consider natural or mini-IVF
- Multiple cycles may be necessary
- Banking embryos recommended
Normal AMH (1.0-3.5):
- Standard protocols typically work well
- Good response expected
- Single or double cycles often successful
High AMH (> 3.5):
- Lower doses to prevent OHSS
- Close monitoring required
- Trigger timing critical
- Freeze-all cycles common
AMH and Live Birth Rates
Important: AMH predicts egg quantity, not pregnancy success.
- Age remains the strongest predictor of live birth
- Low AMH with good age: reasonable success
- High AMH with advanced age: quality may limit outcomes
- More eggs generally means more chances, but quality matters most
High AMH and PCOS
Very high AMH levels may indicate Polycystic Ovary Syndrome.
The AMH-PCOS Connection
PCOS patients typically have:
- AMH 2-4× higher than age-matched peers
- Multiple small antral follicles
- Arrested follicle development
- Often > 5.0 ng/mL, sometimes > 10 ng/mL
PCOS Diagnostic Criteria
Rotterdam criteria (2 of 3 needed):
- Irregular or absent ovulation
- Clinical or biochemical signs of excess androgens
- Polycystic ovaries on ultrasound (12+ follicles or enlarged ovaries)
High AMH alone does not diagnose PCOS but supports the diagnosis when other criteria are present.
PCOS and Fertility Treatment
Advantages:
- Large egg pool available
- Often good response to stimulation
- May have many eggs retrieved
Challenges:
- High OHSS risk
- May need careful low-dose protocols
- Egg quality can be affected
- May take longer cycles to achieve pregnancy
AMH in PCOS Treatment
Some research suggests:
- AMH levels correlate with PCOS severity
- Higher AMH = more resistant to treatment
- Weight loss may reduce AMH in PCOS
- Metformin may help regulate cycles
Low AMH and Fertility Options
Low AMH requires thoughtful planning but doesn't mean infertility.
What Low AMH Means
It indicates:
- Fewer eggs remaining
- Potentially less time to conceive
- May respond less to IVF medications
It does NOT mean:
- You cannot get pregnant naturally
- IVF won't work
- Your eggs are poor quality
- Menopause is imminent
Natural Conception with Low AMH
Many women with low AMH conceive naturally because:
- You only need ONE good egg
- Quality matters more than quantity
- Regular ovulation still occurs
- Low reserve ≠ no reserve
Treatment Options
1. Timed Intercourse: Still the first-line for many with low AMH and open tubes.
2. IUI (Intrauterine Insemination): Reasonable option if tubes are open and partner's sperm is normal.
3. Mini-IVF: Lower medication doses, fewer eggs, gentler process.
4. Conventional IVF: Higher doses may yield more eggs; multiple cycles may be needed.
5. Egg Banking: Retrieve and freeze eggs over multiple cycles before fertilization.
6. Donor Eggs: Option when own eggs are insufficient or unsuccessful.
Time Sensitivity
With low AMH:
- Don't delay treatment unnecessarily
- AMH may continue declining
- Egg quality (age-related) also declines
- Multiple treatment cycles may be needed
Factors Affecting AMH Levels
Several factors can influence your AMH results.
Temporary Suppressors
Birth control pills:
- Can suppress AMH by 30-50%
- Wait 2-3 months after stopping for accurate test
- GnRH agonists have similar effect
Recent surgery:
- Ovarian surgery can reduce AMH
- Endometrioma removal affects reserve
- Effect may be temporary or permanent
Conditions Affecting AMH
Endometriosis:
- Ovarian endometriomas can damage follicles
- Surgery further reduces reserve
- Often lower AMH than expected for age
Autoimmune conditions:
- Some may accelerate follicle depletion
- Thyroid disorders may affect results
- Genetic factors play a role
Testing Variability
Between labs:
- Different assays may give different results
- Use same lab for serial monitoring
- Gen II assay most commonly used
Over time:
- Normal fluctuation of 10-15%
- Don't overreact to single tests
- Trends matter more than single values
When to Retest
Consider retesting if:
- Result seems inconsistent with AFC
- Recently stopped birth control
- Different lab used previously
- Planning major treatment decisions
Pro Tips
- 💡Test AMH any cycle day - it remains stable throughout your cycle.
- 💡Wait 2-3 months after stopping birth control for accurate results.
- 💡Compare results using the same lab for consistency.
- 💡Low AMH doesn't mean you can't conceive naturally.
- 💡Age matters more than AMH for egg quality and pregnancy success.
- 💡Very high AMH warrants PCOS evaluation.
- 💡Don't panic over a single low result - consider retesting.
- 💡AMH predicts IVF response better than natural fertility.
- 💡Discuss treatment timing if AMH is low - time may matter.
- 💡Lifestyle factors (smoking, weight) can affect ovarian reserve.
- 💡Multiple IVF cycles may be needed with low AMH.
- 💡Consider your complete picture: age, AMH, AFC, and medical history.
Frequently Asked Questions
Good AMH varies by age. At 25-30, normal is 2.5-4.0 ng/mL; at 35, normal is 1.5-2.5 ng/mL; at 40, normal is 0.5-1.5 ng/mL. However, even "low" AMH doesn't mean infertility - it indicates fewer eggs remaining, not egg quality. A 32-year-old with AMH of 1.0 still has reasonable fertility potential despite being "low for age."
