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Aluz, Clinica de Fertilidad Avanzada, year by year

Everything the Spanish National Activity Registry publishes about Aluz, Clinica de Fertilidad Avanzada between 2013 and 2023: 9 years with data. Each year carries its own attribution, because each year is a separate publication of the registry.

Volume first

Activity comes before results on purpose: a high percentage over few cycles does not mean what the same percentage over many cycles means. The registry publishes cycles as bands and that is how we show them, never reduced to a single figure; transfers are an exact count.

Transfers recorded per year — IVF/ICSI with own oocytes
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Transfers recorded per year — IVF/ICSI with own oocytes
YearValue
20164
201738
201853
201968
202062
2021100
2022102
2023110
Transfers recorded per year — Egg donation
’13’14’15’16’17’18’19’20’21’2233’23
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Transfers recorded per year — Egg donation
YearValue
201716
201812
201915
202024
202124
202226
202333

Results, year by year

Each band is the interval the registry published that year: the floor and the ceiling of the estimate, not a point. There is no line joining the years, and that is deliberate — joining the centres of successive intervals would assert a trend the data does not support.

IVF/ICSI with own oocytes · Under 35
  • Fresh embryos
  • Frozen embryos
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IVF/ICSI with own oocytes · Under 35
YearFresh embryosFrozen embryos
20170 – 40.2%0 – 67.4%
201812 – 76.9%0 – 49.4%
20194.3 – 49%4.9 – 52.2%
20200 – 35.4%21.7 – 64%
20217.9 – 64.8%28.8 – 64.5%
20221.6 – 58.4%30.5 – 61.8%
2023—30.7 – 60.2%
IVF/ICSI with own oocytes · Between 35 and 39
  • Fresh embryos
  • Frozen embryos
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IVF/ICSI with own oocytes · Between 35 and 39
YearFresh embryosFrozen embryos
20170 – 31.6%0 – 46.5%
20180.2 – 46%0.2 – 46%
20190 – 37.8%23.3 – 70.8%
20200.5 – 49.5%0.5 – 49.5%
202121.7 – 78.3%32.4 – 71.6%
20221.6 – 58.4%11.6 – 55.1%
2023—3.7 – 32%
IVF/ICSI with own oocytes · Over 40
  • Fresh embryos
  • Frozen embryos
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IVF/ICSI with own oocytes · Over 40
YearFresh embryosFrozen embryos
20180 – 40.2%—
2019—100 – 100%
20200 – 67.4%0 – 67.4%
20210 – 41%1 – 53.6%
202213.8 – 69.6%0.2 – 46%
20230 – 46.5%0 – 29.3%
Egg donation · Under 35
  • Fresh embryos
  • Frozen embryos
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Egg donation · Under 35
YearFresh embryosFrozen embryos
2017100 – 100%—
2019100 – 100%—
2020100 – 100%—
202213.3 – 100%100 – 100%
2023100 – 100%100 – 100%
Egg donation · Between 35 and 39
  • Fresh embryos
  • Frozen embryos
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Egg donation · Between 35 and 39
YearFresh embryosFrozen embryos
20190 – 67.4%0 – 100%
20200 – 71.1%100 – 100%
2022—0 – 55.1%
20230 – 67.4%—
Egg donation · Over 40
  • Fresh embryos
  • Frozen embryos
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Egg donation · Over 40
YearFresh embryosFrozen embryos
20179.6 – 70.4%0 – 55.1%
201841.6 – 98.4%—
2019—13.3 – 100%
20209.6 – 70.4%28.9 – 100%
202115.4 – 84.6%16 – 74.9%
202246.4 – 99%0 – 82.9%
202313.8 – 69.6%4.9 – 52.2%
AIH — artificial insemination (partner’s sperm) · Under 40
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AIH — artificial insemination (partner’s sperm) · Under 40
YearUnder 40
20130 – 62%
AIH — artificial insemination (partner’s sperm) · Under 35
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AIH — artificial insemination (partner’s sperm) · Under 35
YearUnder 35
2016100 – 100%
201813.3 – 100%
20200 – 35.4%
20210 – 18.1%
20230 – 100%
AIH — artificial insemination (partner’s sperm) · Between 35 and 39
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AIH — artificial insemination (partner’s sperm) · Between 35 and 39
YearBetween 35 and 39
2018100 – 100%
201913.3 – 100%
20200 – 46.5%
20210 – 86.7%
20220 – 100%
AID — artificial insemination (donor sperm) · Under 40
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AID — artificial insemination (donor sperm) · Under 40
YearUnder 40
20130 – 55.1%
AID — artificial insemination (donor sperm) · Under 35
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AID — artificial insemination (donor sperm) · Under 35
YearUnder 35
2016100 – 100%
2017100 – 100%
20180 – 55.1%
201917.1 – 100%
20201 – 99%
20210 – 49.4%
20220 – 55%
20230 – 49.4%
AID — artificial insemination (donor sperm) · Between 35 and 39
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AID — artificial insemination (donor sperm) · Between 35 and 39
YearBetween 35 and 39
20180 – 82.9%
20210 – 86.7%

Year-by-year table

The table is the exact and complete reading: everything in the charts, and more. Each row cites the wording the registry requires for that year.

YearName in the registryTransfersPregnancy per transfer (under 35)Pregnancy per cycle (insemination)Attribution
2013Centro Ginecologico ForumNo dataNo data0 – 62%Registro Nacional de Actividad 2013-Registro SEF
2014No data
2015No data
2016Aluz, Clinica de Fertilidad Avanzada4No data100 – 100%Registro Nacional de Actividad 2016-Registro SEF
2017Aluz, Clinica de Fertilidad Avanzada540 – 40.2%100 – 100%Registro Nacional de Actividad 2017-Registro SEF
2018Aluz, Clinica de Fertilidad Avanzada6512 – 76.9%13.3 – 100%Registro Nacional de Actividad 2018-Registro SEF
2019Aluz, Clinica de Fertilidad Avanzada834.3 – 49%13.3 – 100%Registro Nacional de Actividad 2019-Registro SEF
2020Aluz, Clinica de Fertilidad Avanzada860 – 35.4%0 – 35.4%Registro Nacional de Actividad 2020-Registro SEF
2021Aluz, Clinica de Fertilidad Avanzada1247.9 – 64.8%0 – 18.1%Registro Nacional de Actividad 2021-Registro SEF
2022Aluz, Clinica de Fertilidad Avanzada1281.6 – 58.4%0 – 100%Registro Nacional de Actividad 2022-Registro SEF
2023Aluz, Clinica de Fertilidad Avanzada143No data0 – 100%Registro Nacional de Actividad 2023-Registro SEF

Gaps in the series, and how to read them

The registry’s province-by-province census returns empty for 2009 and 2010, even though the individual profiles for those years do exist and have been recovered one by one. A centre missing from a given year means the registry publishes no profile for it that year — not that it closed.

The registry’s template changed schema in 2014 and again in 2015: up to 2013, cycles, implantation and transfers are published without separating fresh from frozen embryos, and insemination is published for a single age band (“under 40”). That is why some years carry fewer series than others: it is what the source published, not a missing figure.

And most important: a change from one year to the next is not, on its own, an improvement or a decline. The patient mix changes, selection criteria change and, at small volumes, chance changes too. Wide intervals are precisely the signal that the exact number cannot be trusted.

Official guide: how to interpret a centre’s data (PDF, in Spanish)

← Back to the Aluz, Clinica de Fertilidad Avanzada profile

Source: “Registro Nacional de Actividad 2023-Registro SEF” (Spanish National ART Activity Registry) — registrosef.com, retrieved 31 July 2026.