How the overdiagnosis of TB harms infertile women
When you hear the word “tuberculosis”, you probably think of coughing, fevers, or maybe a distant memory of someone in your family getting treated for it long ago. But if you are a woman struggling to get pregnant, and your doctor brings up “genital TB” after a test or a laparoscopy, the conversation suddenly gets personal and frightening. If you have ever been told you have “TB PCR positive” with barely any symptoms, and you now find yourself pregnant while taking anti-TB medicines, it can feel like your world is spinning: Should you stop the medicines? Will the drugs harm your baby? Did you ever truly have TB in the first place?
- Many infertile women are wrongly told they have genital TB based on unreliable tests.
- Unnecessary anti-TB medication carries risks, especially if you become pregnant while on the drugs.
- Genital TB is a real cause of infertility, but overdiagnosis is common and can cause more harm than good.
- If you are unsure about your TB diagnosis or treatment, seek a second opinion before continuing medication.
- Malpani Infertility Clinic can help you make sense of confusing test results and guide your next steps safely.
Why Genital TB Gets Overdiagnosed in Infertility
Most women battling infertility have already endured countless scans, blood draws, and doctor visits. When a doctor suggests “genital tuberculosis” as a possible reason for not conceiving, it triggers fear and confusion. After all, TB is a serious infection, but in India and other countries with high TB rates, it is also frequently overdiagnosed, especially in women with unexplained infertility.
Why does this happen? A big reason is the use of sensitive, but unreliable, molecular tests like TB PCR. These tests sometimes detect fragments of TB DNA, even when no real infection exists. This leads to a flood of “false positives”: you are told you have TB, but in reality, you may not.
Many gynecologists, worried about missing something, start anti-TB treatment “just in case.” But these medicines can be hard on your body, and taking them unnecessarily is not just a waste, it can be dangerous, especially if you are pregnant or planning pregnancy.
Genital TB is real, but the tests are not perfect. Many women are wrongly treated for TB they never had.
To learn more about the pitfalls of TB testing, see Dr. Malpani’s post: Laboratory TB versus Genital TB.
The Human Cost: Confusion and Dilemma After a Positive Test
Take the story of a patient who wrote to us recently:
I had Laparoscopy 4 months back, was diagnosed with TB PCR, and now I am 5 Weeks Pregnant. My concern is should I continue the medicines prescribed by the doctor? Will it cause any birth defect in the baby if I consume the medication, like cleft lip? Or will I lose the pregnancy if I do not take the medicines? Please advise.
This is not an isolated story. Many women find themselves trapped: their doctors have told them to start anti-TB treatment, but then, when pregnancy happens (sometimes in spite of the medicines, not because of them), they are left with terrifying questions. Could the drugs harm my baby? What happens if I stop now?
Sadly, many well-meaning doctors believe they are helping by starting anti-TB medications. But the truth is, most women in this situation never needed those drugs. Worse, when the patient does get pregnant, the doctor may claim the treatment "worked," when in fact, pregnancy happened despite the unnecessary therapy.
Genital TB: When Is It Real and What Should You Watch For?
To be clear: genital tuberculosis is a genuine cause of infertility. When it is truly present, it can damage the fallopian tubes, uterus, or ovaries, leading to:
- Blocked tubes (making it impossible for eggs and sperm to meet)
- Scarring inside the uterus (which can prevent implantation)
- Thin or damaged endometrial lining (making pregnancy harder)
- Irregular periods or even total absence of periods
But here is the catch: in most women, genital TB does not cause any symptoms at all. There is no cough, no fever, nothing obvious. That is why it is tempting for doctors to rely on any positive test result, even when it might not mean anything.
So how is true genital TB diagnosed? The most reliable way is to look for actual bacteria or classic signs of TB damage on laparoscopy or biopsy. Even then, the diagnosis is tricky, because tests like TB PCR often give false alarms.
The Risks of Unnecessary Anti-TB Treatment
Anti-TB drugs are not harmless. The usual treatment lasts 6 to 12 months and includes medicines like isoniazid, rifampicin, pyrazinamide, and ethambutol. These can cause:
- Liver problems (sometimes severe)
- Rashes and allergic reactions
- Upset stomach, vomiting, or loss of appetite
- Blood count changes
- And, in rare cases, birth defects if taken during pregnancy
For women who become pregnant while on anti-TB drugs, especially in the first trimester, when the baby's organs are forming, there is the added fear of harming the baby. The truth is, most anti-TB medicines are considered relatively safe in pregnancy if truly needed. But if you never needed them in the first place, any risk is too much.
of women treated for TB-related infertility will achieve pregnancy with correct diagnosis and management, but this drops sharply when drugs are misused.
What Should You Do If You Are Told You Have Genital TB?
If you have been diagnosed with genital TB based only on a positive PCR test, or if you are already pregnant and worried about your medicines, arm yourself with these steps:
- Ask your doctor for specific evidence of TB: Was there visible scarring, granulomas, or bacteria seen on biopsy or laparoscopy?
- Ask whether your symptoms (if any) truly match classic TB signs.
- Do not hesitate to get a second opinion before continuing long-term medication.
- If you are already pregnant, discuss the risks and benefits of stopping or continuing treatment with a fertility expert who understands both TB and pregnancy.
- Remember: a positive test is not a diagnosis by itself. Context matters.
At Malpani Infertility Clinic, we see too many women harmed by unnecessary treatments that do not help, and sometimes worsen, their chances of having a healthy baby. Our approach is different: we believe in clear, evidence-based guidance, and in helping you make informed choices, not just blindly following protocols. If you are confused, anxious, or need clarity on TB and infertility, our team is here to help you make the safest, smartest decisions for your future family.
Frequently Asked Questions
Q: Can TB really cause infertility?
A: Yes, when TB infects the reproductive organs (fallopian tubes, uterus, or ovaries), it can block tubes, scar the uterus, or damage the lining, making pregnancy much harder. But not all infertility is caused by TB, and overdiagnosis is common.
Q: Are TB PCR tests reliable for diagnosing genital TB?
A: TB PCR tests often give false positives. They detect fragments of TB DNA, which does not always mean there is an active infection. Diagnosis should be made using a combination of clinical findings, biopsy, and other confirmatory tests.
Q: What are the risks of taking anti-TB drugs during pregnancy?
A: While most anti-TB drugs are considered safe if truly needed, taking them unnecessarily can expose you to potential side effects, and any medicine in the first trimester may carry some risk. Always weigh the risks and benefits with a fertility specialist.
Q: If I have a positive TB PCR but no symptoms, should I start treatment?
A: Not automatically. Ask for additional evidence, such as biopsy results or imaging that shows clear TB damage. A positive PCR alone is not enough to justify treatment.
Q: How can Malpani Infertility Clinic help if I am confused about my TB diagnosis?
A: Our doctors can review your reports, explain the true meaning of your test results, and help you decide whether you really need treatment or not. We focus on evidence and your safety, not just routine protocols.