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First Trimester Screening

First Trimester Screening is the current recommended screening program to identify women at increased risk of having an atlected foetus with chromosomal aneuploidy such as Down syndrome (Trisomy 21), Edwards syndrome (Trisomy 18) or Patau syndrome (Trisomy13)

We offer a fast turnaround time, conveniently located collection centres, accredited testing methods and results and genetic counselling at no additional charge (referral form required).

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Harmony Non-Invasive Prenatal Testing

​What is the Harmony Prenatal Test?

When you’re pregnant, your blood contains fragments of your baby’s DNA. Harmony Prenatal Test is a new type of screening test that analyses this DNA in a sample of your blood to assess the risk of Down syndrome (trisomy 21) and two other genetic conditions, trisomy 18 (Edwards syndrome) and trisomy 13 (Patau syndrome).

For Women of Any Age or Risk Category Traditional blood tests can miss as many as 20% of Down syndrome cases in pregnant women.

Clarity Early

Harmony Prenatal Test requires a single blood draw and can be done as early as 10 weeks or later in pregnancy. Results are usually available in about seven business days. Other commonly used screening tests for Down syndrome are performed later in pregnancy and may require multiple office visits.

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General Fasting Instructions

12 hours is the optimal fasting period. Fasting longer than the recommended time could compromise your results. You may be advised to defer the test to another day.

To ensure your test is accurate it is important to adhere to the following:

  • Have nothing to eat or drink for at least 10 to 12 hours prior to your test - preferably an overnight fast
  • If you are thirsty, sips of plain water only are permitted (no coffee, tea, fruit juice, lemonade or alcohol)
  • You are advised to avoid smoking
  • You are advised not to chew gum
  • Medications should only be stopped on the instructions of your doctor. Take them with sips of water only
  • If you are diabetic please consult your doctor prior to fasting


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