Non Invasive Prenatal Testing

NIPT is regarded as gold standard testing and used to identify the risk of genetic conditions during pregnancy.

NIPT is recommended in genetic medicine because it offers expectant parents the latest in antenatal screening technology.  

NIPT is performed using a simple blood test from the mother with no risk to your unborn baby in comparison to one of the 'next step' diagnostic tests such as Amniocentesis or Corionic Villus Sampling. Each test is performed using a simple maternal blood sample at one of our recommended clinics or at home. 

If you are a private midwife or Ultrasound Clinic and would like to become a provider of tests or a  recommended partner for pregnancy care, ultrasound or fertility care- please feel free to contact us.


Available Tests

Trimester NIPT screening test options are provided by laboratories who use globally reknowned Illumina tecnology.


This NIPT test solely screens for Down's syndrome.  For a deeper understanding of Down's syndrome please visit the NHS website or gain further support from The Down's Syndrome Association

  • Downs Syndrome (Trisomy 21) 

  • Gender Determination (optional) 

  • Available from 9 Weeks

  • Results within 5-10 Working Days 


This test provides analysis of chromosomes 13, 18, 21 and X and Y sex chromosomes. Find out more

  • Downs Syndrome (Trisomy 21)

  • Patau’s Syndrome (Trisomy 13) 

  • Edwards Syndrome (Trisomy 18)

  • X & Y

  • Gender Determination (optional)  

  • Available from 10 Weeks

  • Results within 3-5 Working Days


Trimester THREE gives you valuable information about the chromosomal status of the growing baby and screens all 24 chromosomes for the most common conditions, this includes analysis of chromosomes 9 and 16 which are known to cause intellectual and physical abnormalities and miscarriage.

Newer tests take advantage of next-generation sequencing (NGS) to bring a Whole Genome Sequencing (WGS) approach to NIPT, expanding test options beyond chromosomes 21, 18, and 13 to include rare autosomal aneuploidies (RAAs), sex chromosome aneuploidies (SCAs), and partial deletions and duplications

Find out more.

  • All 24 Chromosomes 

  • Downs Syndrome (Trisomy 21)

  • Patau’s Syndrome (Trisomy 13) 

  • Edwards Syndrome (Trisomy 18)

  • Turners Syndrome (Monosomy X)

  • Klinefelter Syndrome Trisomy XXY)

  • Jacobs Syndrome (Trisomy XYY)

  • Trisomy X​

  • Gender Determination (optional) 

  • Available from 10 weeks

  • Results within 3-5 Working Days​


Trimester FOUR provides analysis of all 24 chromosomes for the most common conditions, including 9 and 16, known to cause intellectual, physical abnormalities and miscarriage, as well as 5 specific microdeletion regions.  

These are associated with six most distinct syndromes (RAA's) affecting; motor skills, physical features, speech and language, and causing distinctive behavioural problems and miscarriage.

While they are rare, rare autosomal aneuploidies (RAAs) are probably more prevalent than you may expect. Their

screen positive rate in early pregnancy is estimated to be 0.44%. Compare that to the estimated combined 0.56% screen positive rate of trisomy’s 21, 18, and 13.

Find out more about RAA's and Microdeletion Syndromes 

  • All 24 Chromosomes 

  • Downs Syndrome (Trisomy 21)

  • Patau’s Syndrome (Trisomy 13) 

  • Edwards Syndrome (Trisomy 18)

  • Turners Syndrome (Monosomy X)

  • Klinefelter Syndrome Trisomy XXY)

  • Jacobs Syndrome (Trisomy XYY)

  • Trisomy X

  • Gender Determination (optional) 

  • Available from 10 weeks

  • Results within 7-10 Working Days​

Plus 6 Microdeletion Syndromes

  • Di George Syndrome

  • Cri du Chat Syndrome

  • Angelman Syndrome

  • Wolf-Hirschorn Syndrome

  • 1p36 Deletion Syndrome

  • Prader-Willi Syndrome.


NIPT Explained

Non-invasive prenatal testing works by analysing the cell-free DNA (cfDNA) present in the maternal bloodstream.

CfDNA is made up of genetic material from both the mother and baby. NIPT can identify small changes in the amount of DNA derived from individual chromosomes, these occur when the pregnancy has an abnormal number of chromosomes (aneuploidy).


Everyone has their own personal reason for performing NIPT. For some they do not know their biological family or there is a history of genetic disease within the family. For other parents it is due to a history of recurrent miscarraige or general pregnacy anxiety, for may it is purely for reasurance purposes. 


Humans have 23 pairs of chromosomes (for a total of 46 chromosomes) { One copy of each chromosome comes from the mother (egg); the other copy comes from the father (sperm)

• The first 22 pairs are called autosomes, and they are same in males and females

• The 23rd pair of chromosomes is called sex chromosomes.

Females have two copies of the X chromosome and males have one X and one Y chromosome. 

An abnormality in an embryo's chromosomal configuration may cause a specific syndrome to occur or may cause the pregnancy to miscarry. Sometimes embryos are created with too many or too few chromosomes—a condition known as aneuploidy. 

Aneuploidy is a major contributor to miscarriage, in vitro fertilization (IVF) failure, and various health conditions, including Down's syndrome. 


Accuracy is dependent on the syndrome you are screening for. There is a very small chance the test will not detect an affected pregnancy. There is a small chance (around 0.3%) that the test will incorrectly show a positive result, in this instance we would always recommend diagnostic testing.

NIPT is more accurate than the first trimester NHS combined test or second trimester NHS quadruple test for estimating the risk of genetic disease. However, NIPT is a form of 'screening' and is not a diagnostic test. Amniocentesis or Corionic Villus Sampling are the recommended tests which are diagnostic however, as these come with risks of miscarriage it is recommended to use the no risk NIPT test as the first step. Any concerns during pregnancy should always be discussed with your health care provider.


Results that are reported as negative do not eliminate the possibility that the pregnancy has other chromosomal abnormalities, genetic conditions, or birth defects. There is a small possibility that the results might not reflect the chromosomes of the baby, but the chromosomal status of the mother or placenta (a situation known as “placental mosaicism”) or the presence of a tumour (as tumours often have an incorrect number of chromosomes in their cells). 


  • Results apply only to conditions tested

  • A negative result means your pregnancy has a decreased chance of having a condition { In most cases, the condition is truly not present (true negative result) { Rarely, the condition may be present (false negative result)

  • A positive result means an increased chance of having the condition { In most cases, the condition is truly present (true positive result) { In some of these, the condition is not present (false positive result)

  • Since NIPT is a screening test, results should be taken into context of the overall pregnancy picture and positive results should always be confirmed prior to making pregnancy management decisions.


All Trimester tests can be performed with twins with the exception of Trimester ONE.  As with all NIPT test providers, the status of each individual baby cannot be determined, therefore the result will reflect the entire pregnancy. The test can also only report the presence or absence of Y chromosome material (found only in males) but it will not be clear whether both twins are male or just one of them. 


Please be aware that a small number of samples can fail the NIPT process when there is not enough fetal DNA in the mother’s blood to extract."  Trimester 2, 3 and 4 have the advantage of having the lowest failure rates of any NIPT test currently available (0.1%).


We Go the Extra Mile

If you are unsure which is the the best method of antenatal screening for you discuss it with your midwife or obstetrician or simply book a consultation with us. All Trimester non-invasive pre-natal screening tests are collected by courier and processed in UKAS accredited laboratories. Unlike other tests on the market, Trimester NIPT tests are not outsourced to external laboratories in the US or China.


Book a pre-test consultation to decide which test is right for you.

Blood Test

Attend one of our clinics, or choose the comfort of your own home* (T&C's apply)


Laboratory results are personally delivered by telephone consultation with a medical professional.


Here for you.

Nationwide NIPT Availability- May include home visits- Contact us for details.