What non-invasive prenatal testing screens for, when it can be taken, how accurate it really is and why it is a screening test rather than a diagnosis.
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What a multiplex STI PCR panel covers, which organisms are true pathogens and which are commensals, and how to choose the right panel in Bangkok.
Why gonorrhoea needs both PCR and culture, which sites to swab, and how antimicrobial resistance affects treatment and test of cure in Thailand.
What carrier screening covers, the difference between targeted and expanded panels, and the non-genetic preconception tests that matter just as much.
How NIPT performs in twin pregnancies, what a vanishing twin does to the result, and what to tell the laboratory about IVF, donor eggs or surrogacy.
A clear window period table for HIV, syphilis, chlamydia, gonorrhoea, hepatitis and herpes, plus what to do in the first 72 hours after a risk.
How chlamydia PCR testing works in Bangkok, why most infections have no symptoms, which sites to swab and when a test of cure is needed.
How NIPT determines fetal sex, how accurate it is from 10 weeks, the recognised causes of discordant results, and the clinical reasons it matters.
How the day-21 progesterone confirms ovulation, how to time it when cycles are irregular, and what a low result does and does not mean.
Why Ureaplasma parvum, U. urealyticum and Mycoplasma hominis are usually normal flora, what a positive result means and when treatment is justified.