{"id":8971,"date":"2019-10-30T08:34:14","date_gmt":"2019-10-30T08:34:14","guid":{"rendered":"https:\/\/pamap.accessfertility.com\/ie\/2019\/10\/30\/fresh-vs-frozen\/"},"modified":"2026-07-15T14:28:10","modified_gmt":"2026-07-15T13:28:10","slug":"fresh-vs-frozen-cycles-ivf","status":"publish","type":"post","link":"https:\/\/www.accessfertility.com\/ie\/fresh-vs-frozen-cycles-ivf\/","title":{"rendered":"IVF Frozen Cycles vs Fresh Cycles"},"content":{"rendered":"
You told us you\u2019d like to hear about the difference between frozen cycles IVF and IVF fresh cycles so hopefully the following information will be useful for you. You can also read our previous blog<\/a> about IVF frozen embryo transfer vs fresh cycles here.<\/p>\n According to the latest\u00a0HFEA Trends and Figures<\/a> report published in May 2019,\u00a0Frozen Embryo Transfer (FET) cycles have increased by 11% between 2016 and 2017 whilst the number of fresh embryo transfers has dropped by 2%. For the first time, Frozen Embryo Transfer cycles are now more successful than fresh (23 vs 22%) based on the HFEA\u2019s national figures.<\/p>\n Usually the following process is followed during an IVF \u2018fresh\u2019 cycle:<\/p>\n As an example, let\u2019s say that a lady has received the stimulation drugs and gone through the egg collection procedure. She had nine eggs collected during the procedure and six of those successfully fertilised. One or perhaps two (if clinically advised) may be transferred back a few days after the procedure. These are classed as a \u2018fresh\u2019 transfer because the eggs have been \u2018freshly\u2019 collected recently.<\/p>\n Those of you who are good at maths can see there are then four or five successfully fertilised embryos left. This is when you can choose to have the remaining embryos frozen for use at a later stage.<\/p>\n Hopefully the fresh transfer you had would have been successful in creating a pregnancy but, if it wasn\u2019t, you can then work your way through the frozen embryo transfer before you start your next fresh cycle.<\/p>\n In the case that the frozen embryo transfers (FETs) were unsuccessful, you would then undergo another \u2018fresh\u2019 stimulation and collection to get a new batch of eggs for fertilisation.<\/p>\n In some cases, the clinician may suggest a \u2018freeze all\u2019 where all the embryos created after egg freezing takes place and no embryo transferred in that cycle. This is usually suggested for patients who have over responded to drugs or have other issues where it may be beneficial for the womb lining (endometrium) to almost have a bit of a break before the transfer. This can help to make sure the endometrium is in the best condition for implantation, and therefore success.<\/p>\n It\u2019s not a \u2018one size fits all\u2019 with anything to do with fertility and data suggests that a freeze-all policy should be individualised, presumably in favour of PCOS<\/a>\/hyper-responding patients. You can read more about the freeze all in our previous blog here<\/a>.<\/p>\n Andrew Thomson, the Laboratory Manager at one of our partner clinics, the London Women\u2019s Clinic<\/a>, explains: using the latest vitrification (freezing) technology, embryos don\u2019t deteriorate once frozen they are preserved at the age you are at the time of freezing. For example, if you were aged 35 when you froze the embryos, if you use them 5 years later, the embryos will still be 35! This means that today embryos can be thawed out and replaced in a Frozen Embryo Transfer (FET) cycle, when the patient is ready, with the same or better chance of success than in a fresh cycle.<\/p>\n Over the last few years, the scientific community have found that embryo transfer in a IVF frozen cycle may produce better results.\u00a0 Due to the stimulation medication a patient is given prior to egg collection and the trauma of the egg collection procedure itself, an embryo transfer during this same cycle may not be the best or safest time.\u00a0 It could also reduce the chance of pregnancy.\u00a0 More clinics<\/a> are opting to freeze the embryos and replace them in a FET cycle a month later or when the patient is ready.<\/p>\n A FET cycle uses minimal or no medication so one embryo can be replaced into a much more natural environment resulting in potentially higher success rates and hopefully a safer pregnancy. There has been a lot of research on this topic but at present there is still no consensus as to the best policy with different clinics favouring fresh or frozen embryos.\u00a0<\/p>\n Patients should be aware that there is a very small chance the embryos will not survive the freezing and thaw process.\u00a0 In these instances, either another embryo will be thawed (if available) or the embryo transfer will be cancelled.<\/p>\n Often with\u00a0IVF\u00a0treatment<\/a>, there may be good quality embryos left over after embryo transfer. Instead of discarding them, there is the option to freeze them to use in the future (in case treatment doesn\u2019t work for example, or to try for a sibling).<\/p>\n Embryos can also be frozen to preserve fertility so it may be possible to freeze embryos when you are 35 to have a baby at a later date as your embryos will still be the age they were at the time of freezing.<\/p>\n The standard storage period for embryos is normally 10 years for frozen embryos but this can be shorter or longer, depending on your circumstances. There has been no evidence to show any damage to embryos caused by the freezing process, or for the length of time they are in storage.<\/p>\n However, as mentioned earlier, there can be issues with some embryos not surviving the thawing process but this is not usually due to the length of time they have been in storage.<\/p>\n Success rates<\/a> for IVF using frozen embryos have been increasing year on year and are now comparable to rates using fresh embryos. For women aged under 35, birth rates are slightly higher for fresh transfers and rates are level for women aged between 35-37. For women aged over 37, birth rates for frozen transfers have actually exceeded the rates for fresh embryos. This may be because the embryos transferred in the IVF frozen cycle were created using eggs collected some time ago, when the woman was younger.<\/p>\n It\u2019s not one size fits all and your clinician will advise what is best for your specific situation.<\/p>\n It can cost, on average, between \u00a3800 and \u00a31500 for thawing and transferring an embryo to the womb.<\/p>\n Please note that, depending on where you live, you may not be able to have embryo freezing on the NHS<\/a>.<\/p>\n You can be reassured though that if you have to go privately for your treatment and you have an Access Fertility programme you are covered for up to 3 fresh cycles and unlimited FETs. You also get one year freezing and storage included with these packages.<\/p>\n Thanks to:<\/p>\n
<\/h4>\nWhat are \u2018fresh\u2019 and \u2018frozen\u2019 IVF cycles?<\/strong><\/h4>\n
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What does this mean in practice?<\/strong><\/h4>\n
What is a \u2018freeze-all\u2019?<\/strong><\/h4>\n
Why have Frozen Embryo Transfer cycles seen such an increase?<\/strong><\/h4>\n
Frozen embryos don\u2019t always survive the thawing process<\/strong><\/h4>\n
<\/h4>\nWhen can I use frozen embryos?<\/strong><\/h4>\n
Are embryos affected by the length of time they’re frozen?<\/strong><\/h4>\n
What are the success rates for Frozen Embryo Transfers<\/strong><\/h4>\n
<\/h4>\nWhich option should I choose?<\/strong><\/h4>\n
How much do IVF frozen cycles cost?<\/strong><\/h4>\n