With gamete intra-fallopian transfer (GIFT), the preparation and monitoring of the growth of eggs is identical to in vitro fertilisation (IVF).
Instead of the eggs being fertilised “in vitro” in the laboratory, the healthiest eggs and sperm are placed together in the woman’s fallopian tubes. Fertilisation therefore takes place in the body, as it would if conception had occurred naturally.
GIFT has been used with some success in cases where:
However, the clinical guidelines on fertility issued by NICE (the National Institute for Health Clinical Excellence) state:
‘There is insufficient evidence to recommend the use of gamete intrafallopian transfer … in preference to in vitro fertilisation in couples with unexplained fertility problems or male factor fertility problems.’
Step 1. Before proceeding with GIFT, it is essential that your fallopian tubes are known to be open and healthy. A tubal patency test is usually carried out as part of your assessment by the fertility clinic.
Step 2. Up to the point of egg collection, the procedure for GIFT is the same as that for IVF.
Step 3. You will be anaesthetised and your doctor will make a small 5mm cut at the umbilicus. This is so they can insert a laparoscope to view your womb and fallopian tubes.
Step 4. Under direct vision through the laparoscope, eggs are removed from the ovaries. This may require two additional small incisions in the
Step 5. Up to three of the best quality eggs, if you are below the age of 40, or up to four eggs if you are over 40 are then mixed with the prepared sperm in a catheter (a fine, flexible tube).
Step 6. The doctor inserts the catheter via the laparoscope into the end of one or both fallopian tubes and deposits the eggs and sperm.
Step 7. You need a short rest before going home. You will be given medication to build up the lining of your womb and provide a good environment for any fertilised eggs.
If there are any surplus eggs following treatment, it may be decided to carry out IVF with these eggs and store any suitable resulting embryos for your future use.
On the same day that the eggs are collected, you are asked to provide a sperm sample.
If donor sperm are to be used, these are carefully thawed before being mixed with eggs in the catheter and deposited in the fallopian tubes.