When can you test after embryo transfer?
6 min read · updated September 2026
Short answer:Your clinic will book a beta hCG blood test around nine to twelve days after a day-5 blastocyst transfer, or twelve to fourteen days after a day-3 transfer. Home tests can pick up a pregnancy from about six days after a blastocyst transfer, but early results are unreliable and the trigger injection can still be in your system for up to two weeks.
The two-week wait is not really two weeks — for a blastocyst transfer it is closer to nine or ten days — and it is still the longest part of IVF.
The clinic's timetable
- Day-5 blastocyst transfer: beta hCG blood test around 9–12 days later
- Day-3 embryo transfer: around 12–14 days later
- A second beta test 48 hours after the first, to see how the number is moving
- A first scan at around six to seven weeks of pregnancy
What a beta number means
hCG is the hormone the developing pregnancy produces. A single number tells you less than you would like; the trend matters far more. In early pregnancy hCG roughly doubles every 48 to 72 hours, so a rise from 90 to 200 is more reassuring than a one-off reading of 150.
Very broadly, at nine to eleven days past a blastocyst transfer, clinics tend to read anything above around 50 as encouraging, 5 to 25 as inconclusive and needing a repeat, and under 5 as negative. Thresholds differ between labs, so use your own clinic's ranges rather than numbers from a forum.
Home testing before your blood test
Most people do it. If you are going to, know what you are dealing with:
- An hCG trigger injection can produce a positive home test for up to fourteen days after it was given.
- Testing before six days past a blastocyst transfer is very likely to be negative even in a cycle that works.
- A faint line that fades over following days may be a chemical pregnancy — early loss — which is common and not caused by anything you did.
- A negative home test on day 7 or 8 does not settle anything. Wait for the blood test.
There is no medal for not testing and no penalty for testing. But decide in advance what you will do with an ambiguous line, because that is the situation that hurts most.
Symptoms during the wait
Progesterone support causes sore breasts, tiredness, cramping, bloating and nausea. So does early pregnancy. The two are effectively indistinguishable, which means symptom-watching produces anxiety rather than information. Absence of symptoms means just as little — plenty of positive cycles feel like nothing at all.
Getting through it
- Book something in the diary for test day and the day after, whichever way it goes
- Keep working if work helps, and take the time if it doesn't
- Agree with your partner who tells whom, and when
- Keep taking your progesterone until your clinic tells you to stop, even after a negative home test
Related questions
- Can I ask for my beta number?
- Yes, always. Ask for the figure and the date, and for the second reading too — the pair together is what tells the story.
- Is a low but rising beta still hopeful?
- It can be. Slow-rising hCG is monitored carefully because it carries a higher risk of early loss or ectopic pregnancy, but some low starts go on to be healthy pregnancies.
This page explains how IVF works in the UK and is not medical advice. Your clinic knows your history — take these questions to them.
