Long jumper Jade Johnson has had a minor operation as she tries to secure her place at next month’s European Championships in Gothenburg.
The 26-year-old Londoner has been suffering from a kidney problem which has worsened over the past three days and has struggled for form.
“I have seen several specialists who have all agreed that a small operation is needed,” she said.
Johnson is hoping to recover to compete in the London Grand Prix on 28 July.
She added: "I look forward to getting back into competitive action as soon as possible.
“I still hope to compete at the Norwich Union London Grand Prix and, subject to selection, the European Championships in Gothenburg.”
Although the 2004 Olympic finalist has got the required 6.50m distance demanded by the European Athletics Association, she is still 2cm short of the UK Athletics elite standard of 6.65.
Johnson finished second to Kelly Sotherton at last weekend’s European trials but was not included in the first wave of selections for the GB side for Gothenburg named on Tuesday.
“Things don’t seem to be working well for her and she has still to make the elite standard,” said Dave Collins, UK Athletics performance director.