Couples undergoing infertility treatment may be interested to learn that the likelihood that they will conceive could be linked to their blood.
This is the finding of Dr Cathy Allen, from the Rotunda Hospital in Dublin, Ireland, who presented her research to the 25th annual conference of the European Society of Human Reproduction and Embryology today.
The study involved samples of blood obtained from women eight times around conception once the IVF process had begun.
Some 200 genes were identified that showed varied expression in those who had an IVF pregnancy compared with those who did not.
Dr Allen commented: "We found that the gene expression profiles in blood of patients at the time of pituitary down-regulation showed interesting patterns of gene clustering.
"Over 200 genes were differentially expressed in patients who went on to achieve an IVF pregnancy compared with those who did not."
It is estimated that one in seven couples throughout the world have problems conceiving.