If you've had more than one IVF cycle fail, the most useful thing you can do before the next one is stop and test. The single biggest mistake at this stage is repeating an identical protocol and hoping for a different outcome. This article covers the specific investigations worth considering after repeated failure, what each one is looking for, and which ones are worth being sceptical about. For the underlying reasons cycles fail in the first place, our article on what causes failed IVF and repeated implantation failure covers the mechanisms in more detail.
Before Any New Test: Review the Cycles You've Already Had
Your existing cycle records contain a large amount of diagnostic information that often goes unexamined. Before ordering anything new, the following should be established from what you already have:
- How many eggs were retrieved, and how that compared to what your AMH and antral follicle count predicted
- What proportion were mature, since only mature eggs can be fertilised
- The fertilisation rate, and whether conventional IVF or ICSI was used
- How embryos developed, specifically how many reached blastocyst and at what grade
- Endometrial thickness and pattern at the time of transfer
- Whether the transfer itself was difficult, which is recorded but rarely discussed
This review tells you which stage is failing, and that determines which tests are worth doing. Testing the uterus when the problem is embryo development wastes a cycle. If nobody has walked you through these figures, that is the first conversation to have.
Tests for Uterine and Endometrial Factors
Hysteroscopy. Direct visualisation of the uterine cavity, and considerably more sensitive than ultrasound for polyps, submucosal fibroids, adhesions and a uterine septum. All of these can prevent implantation without causing any symptoms. The practical advantage is that most of what is found can be corrected in the same sitting through hysteroscopy and laparoscopy rather than requiring a second procedure.
Endometrial biopsy for chronic endometritis. A low-grade inflammation of the uterine lining that produces no symptoms, doesn't appear on scans, and requires a biopsy with specific staining to detect. It is treatable with antibiotics, which makes it one of the highest-value tests after repeated failure, because a genuinely fixable cause is being missed.
ERA (endometrial receptivity analysis). Tests whether your personal implantation window sits earlier or later than standard transfer timing assumes. An endometrial biopsy and ERA test is most relevant where good-quality embryos have failed to implant repeatedly and the uterus is otherwise normal.
Saline infusion sonography or 3D ultrasound, useful for assessing cavity shape and detecting congenital uterine abnormalities.
Screening for hydrosalpinx. A fluid-filled blocked fallopian tube leaks fluid that is directly toxic to embryos and measurably reduces IVF success. It is worth actively excluding, because the surgical fix before transfer has good evidence behind it.
Tests for Embryo and Genetic Factors
PGT-A (preimplantation genetic testing for aneuploidy). Chromosomal abnormality is the most common single reason a good-looking embryo fails to implant, and embryo grading assesses appearance rather than genetics. PGT screens embryos before transfer so that only chromosomally normal ones are used. Its value increases with maternal age, which is why the picture shifts as it does across the age brackets covered in our article on IVF success rates by age.
Parental karyotyping. A blood test on both partners looking for balanced chromosomal translocations. A parent can be entirely healthy while carrying a rearrangement that produces a high proportion of unbalanced embryos. It is inexpensive and worth doing where there have been repeated failures or losses.
Tests for Male Factor
This is the area most often underinvestigated after repeated failure, largely because a normal semen analysis is treated as a closed question when it isn't.
Sperm DNA fragmentation testing. A routine semen analysis measures count, motility and morphology. It says nothing about the integrity of the DNA inside the sperm. High fragmentation can produce embryos that fertilise and divide normally but arrest later or fail to implant. Where fragmentation is high, options include shorter abstinence intervals, treating any varicocele or infection, antioxidant therapy, and in some cases using testicular sperm via surgical sperm retrieval, since testicular sperm often shows better DNA integrity than ejaculated sperm in these men.
Repeat semen analysis. Sperm parameters vary considerably between samples, so a single result from two years ago is not a current picture.
A urological assessment where parameters are abnormal, looking for varicocele, infection or hormonal causes that are treatable.
Where male factor is significant, ICSI is standard, but it is worth being clear that ICSI solves a fertilisation problem, not a DNA quality problem.
Hormonal and Metabolic Tests
Thyroid function, including TPO antibodies. Subclinical hypothyroidism and thyroid autoimmunity are associated with implantation failure and loss, and both are straightforward to identify and treat.
Prolactin, since elevated levels interfere with the hormonal environment needed for implantation.
Vitamin D, where deficiency is common and correction is simple.
Glucose and insulin testing, particularly relevant where PCOS is part of the picture. Our article on PCOS covers why insulin resistance matters here.
Repeat ovarian reserve testing. AMH and antral follicle count may have changed since your first cycle, and this affects both protocol choice and the wider conversation about how many further attempts are realistic.
Immunological and Clotting Tests: Be Selective
This is where the most money gets spent on the least evidence, so it deserves a direct answer.
Antiphospholipid antibodies have reasonable evidence behind them in the context of recurrent pregnancy loss, and testing is appropriate where that history exists.
Inherited thrombophilia panels are frequently ordered and, outside specific clinical contexts, the evidence that treating them improves IVF outcomes is weak.
NK cell testing, cytokine panels, and the associated treatments such as intralipids, IVIG and steroids are widely marketed for implantation failure. The evidence supporting them is limited and contested, and they are expensive.
The question to ask about any test in this category is specific: what will change in my treatment based on the result, and what evidence supports that change in a situation like mine? If the answer is vague, that is your answer.
A Sensible Order of Investigation
Not everything at once. A reasonable sequence:
- Full review of previous cycle records to identify which stage failed
- Hysteroscopy with endometrial biopsy for chronic endometritis, plus screening for hydrosalpinx
- Sperm DNA fragmentation and a repeat semen analysis
- Thyroid, prolactin, vitamin D and repeat ovarian reserve testing
- Parental karyotyping and consideration of PGT-A, particularly with advancing age
- ERA, where the uterus is otherwise normal and good embryos have repeatedly failed to implant
- Selective immune or clotting testing, only where history specifically warrants it
You can see the full range of diagnostic and treatment options here, and the IVF protocol itself should be revisited in light of whatever the workup finds.
What Should Change in the Next Cycle
Testing only helps if it changes something. Depending on findings, the next cycle might involve a different stimulation protocol, a freeze-all approach with transfer in a subsequent cycle, timing adjusted to your ERA result, correction of a uterine abnormality first, treatment of chronic endometritis before any transfer, a switch to testicular sperm, or the addition of genetic screening.
If nothing is changing, the test was not worth doing.
When to Consider a Second Opinion
Consider one if two or more cycles have failed with no investigation in between, if nobody has explained which stage failed, if the same protocol is being repeated unchanged, or if costly add-ons are being recommended without a clear link to your specific findings.
You can book a free consultation with Dr. Rashmi Agrawal at the Sector 27, Gurugram clinic to have your previous cycle records reviewed, read more about her background and approach, or check the FAQ page.
FAQs
What tests should be done after two failed IVF cycles?
A structured review of your previous cycle records comes first, followed by hysteroscopy with an endometrial biopsy for chronic endometritis, sperm DNA fragmentation testing, and basic hormonal screening. Which further tests are worthwhile depends on which stage of the cycle failed.
Is the ERA test worth doing?
It is most useful where good-quality embryos have repeatedly failed to implant and the uterus is otherwise normal. It is not a first-line test for everyone after a single failed cycle.
Can chronic endometritis be detected on an ultrasound?
No. It requires an endometrial biopsy with specific staining. It causes no symptoms and is frequently missed, which is exactly why it is worth actively looking for.
Does a normal semen analysis rule out male factor?
No. A standard analysis measures count, motility and morphology, not DNA integrity. Sperm DNA fragmentation can be high despite an entirely normal-looking report.
Should I have immune testing after repeated IVF failure?
Some tests, such as antiphospholipid antibodies, are appropriate in specific contexts. Many others marketed for implantation failure have limited evidence behind them. Ask what will change in your treatment based on the result before agreeing to any of them.
How many cycles should fail before starting a full investigation? ‘
There is no rigid rule, but two failed transfers of good-quality embryos is a reasonable point to stop and investigate rather than continuing to repeat cycles unchanged.
Do all these tests need to be done at once?
No, and doing so is usually unnecessary and expensive. A staged approach guided by which stage of your cycle failed is more useful and considerably more cost-effective.
