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Egg Retrieval Estimate Calculator

Work out egg retrieval estimate instantly with clear inputs, formula shown and shareable results.

About Egg Retrieval Estimate Calculator

Scales antral follicle count by the retrieval and maturity rates you enter, then applies typical fertilisation and blastocyst conversion rates.

Formula

Retrieval cascade

Oocytes = antral follicle count x retrieval rate; mature = oocytes x maturity rate; blastocysts approximately mature x 0.6 fertilisation x 0.5 blastulation

Worked example

With the default values below, Egg Retrieval Estimate Calculator returns Expected oocytes retrieved of 9.6. Change any input above and every figure here is recalculated in your browser.

Inputs used

Antral follicle countaccepts 1–60
12
Oocytes retrieved per follicleaccepts 20–100 %
80 %
Share of oocytes that are matureaccepts 30–100 %
80 %

Results

Expected oocytes retrieved
9.6
Expected mature oocytes
7.7
Indicative blastocysts
2.3

Step by step

  1. 1Values used
  2. 2Retrieval cascade
  3. 3Expected oocytes retrieved= 9.6
  4. 4Expected mature oocytes= 7.7
  5. 5Indicative blastocysts= 2.3

Assumptions and limits

  • The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
  • This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.

Frequently Asked Questions

Is antral follicle count the best predictor?

It and anti-Mullerian hormone are the two standard ovarian reserve markers and are often used together.

Do these conversion rates vary?

Considerably, with age, stimulation protocol and laboratory; enter clinic-specific figures where known.

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