Carrier Screening—Plan Your Family with Confidence

Blood test that can screens for 613 genetic conditions you could pass to your children—helping you and your partner make informed reproductive decisions before or during pregnancy. 4 panels available, starting from £550. 
  • Next generation sequencing

  • Up to 613 genetic conditions screened

  • Results in 2-3 weeks

Horizon Carrier Screening

Comprehensive genetic screening for 613 inherited conditions you could pass to your children. 4 panels available allowing you to choose subsets of conditions or whole list. Recommended before conception or in early pregnancy. Simple blood test with results in 2-3 weeks. Partner screening available if you’re identified as a carrier.

  • From

    Any Time

  • Duration

    0 minutes
  • Price

    From £550

  • Results

    2-3 weeks

What's included

Comprehensive carrier screening for 4 to 613 genetic conditions

Screen before or during early pregnancy to understand your risks and make informed family planning decisions

  • Comprehensive Screening

    Tests for up to 613 inherited conditions including cystic fibrosis, sickle cell, Duchenne muscular dystrophy, spinal muscular atrophy (SMA), fragile X syndrome, and many rare metabolic disorders. 
  • Genetic Counseling Support

    We'll explain your results clearly and discuss next steps if needed. If you're a carrier, we'll guide you through partner testing and available options.
  • Partner Screening Available

    Your partner can be tested for matching conditions. Only if both partners carry the same mutation is there risk to your baby.
  • Before or During Pregnancy

    Ideal before conceiving or in early pregnancy for informed planning. Testing early gives you time to understand your risks and explore options if both partners are carriers.
  • Informed Reproductive Choices

    Understand your risks and explore options: natural conception with prenatal testing, IVF with genetic testing, or alternative approaches like donor gametes.
  • Simple Blood Test

    Single blood sample analyzed by an accredited genetics laboratory. Quick to collect, comprehensive results.

Complete Service Overview

Your Carrier Screening—Explained

A genetic test that helps couples determine the risk of passing on serious genetic conditions to their child. Most carriers are healthy, but carry gene variants that could impact their child's health. Can be performed before or during pregnancy.

  • What's Included
    • Blood sample collection
    • Next-generation sequencing analysis
    • Results via email approximately 3 weeks post-screening
  • Who is this for?
    • Couples planning to conceive
    • Those already pregnant wanting to assess carrier risk
    • Those with a family history of genetic conditions
    • Couples from populations with higher carrier frequencies
    • Anyone wanting comprehensive genetic information before starting a family
  • Technical Details
    • Four package options: Horizon 4, 27, 274, or 613 conditions
    • Horizon 4 includes: Cystic Fibrosis, Spinal Muscular Atrophy, Duchenne Muscular Dystrophy, Fragile X
    • Uses next-generation sequencing technology
    • Both partners can be tested to assess combined risk
    • Results in approximately 3 weeks
Download the full conditions list PDF

How it works

What to expect

Your appointment, step by step

  • Before Your Test

    • Book online—quick and straightforward process
    • No fasting or special preparation required
    • Schedule when it suits you—daytime or evening appointments available
  • During your test

    • 10-minute appointment
    • Simple blood sample taken
    • We’ll explain the test and answer your questions
    • Select your preferred conditions panel
    • No discomfort—just like a routine blood test
  • After your test

    • Results in 2-3 weeks
    • Genetic counseling included to explain findings
    • Digital report you can share with your GP or consultant

Why choose Flowan Health

We take the time to explain your results clearly and answer your questions. If you're a carrier, we'll guide you through next steps and partner testing. That's why couples across South London trust us for family planning support.

What you get

What this means for you 

No GP referral requiredBook directly for screening
Clear results explanationUnderstand what your results mean for your family
Accredited laboratory testingSamples analyzed by certified genetics laboratory
Partner testing coordinationWe can arrange partner screening if you are a carrier
5.0/5.0 from 467+ reviewsUnmatched service and attention

Online booking at 2am or 2pm - we're ready when you are

Take the first step towards comprehensive and compassionate healthcare tailored for women.

Book Now


Common questions about carrier screening

Planning your family? Here's what you need to know about genetic carrier screening.

  • What is carrier screening?

    Carrier screening checks if you carry gene mutations for inherited conditions. Carriers are healthy but can pass conditions to their children if both parents carry the same mutation. Testing helps you understand reproductive risks.

  • What are my options if we're both carriers?

    Options include: natural conception with prenatal testing, IVF with preimplantation genetic testing (PGT) to select unaffected embryos, using donor eggs/sperm, or adoption. We can refer you for genetic counseling to discuss.

  • Should my partner be screened too?

    If your results show you’re a carrier for any condition, yes—your partner should be tested for that specific condition. If you’re not a carrier for anything, partner screening isn’t usually necessary.

  • What if I'm a carrier?

    Being a carrier doesn’t affect your health. If you’re a carrier, we’ll recommend your partner gets tested. Only if both partners carry the same condition is there risk to your baby (usually 25% chance per pregnancy).

  • What conditions does Horizon screen for?

    274 conditions including cystic fibrosis, sickle cell disease, Tay-Sachs, spinal muscular atrophy, fragile X syndrome, thalassemia, and many rare metabolic disorders. It’s one of the most comprehensive panels available.

  • When should I have carrier screening?

    Ideally before trying to conceive, so you know your risks in advance. You can also screen during early pregnancy (before 10 weeks) to allow time for decision-making if both partners are carriers.


Happy stories from Parents

Real experiences from those who trust our care.

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