Blood Tests in Pregnancy: What’s Offered at Your Booking Appointment
Updated: Apr 10
Alongside getting to know you at your booking appointment, there will also be time to share important information so you feel informed and able to make decisions with confidence. This includes talking through blood tests — what they are, why they’re offered, and what your options are.
You are always free to accept or decline any aspect of care, and we will take the time to explore what feels right for you.
You are always free to accept or decline any aspect of care
Do I have to have blood tests in pregnancy?
Blood tests are routinely offered at your booking appointment, but they are always your choice.
With your consent, I would usually recommend taking blood at this stage, as it gives helpful information about your health and can highlight anything that may need a little more support.
What do pregnancy blood tests check for — and why they matter
These tests help us understand your health at the start of pregnancy — so we can identify anything early and support both you and your baby safely from the beginning, rather than reacting later on.
If you choose to go ahead, your blood tests at the booking appointment usually include:
Haemoglobin levels (checking for anaemia)
Low iron or anaemia can leave you feeling tired or weak, and if untreated, it can affect the oxygen supply to your baby. Detecting it early allows us to recommend dietary changes or iron supplements to support both you and your baby’s health.
Blood group
Knowing your blood group is essential because, in some cases, your baby’s blood group might be different. If there’s a mismatch, it can lead to a condition called rhesus incompatibility, which could affect the baby’s red blood cells. If this is detected, we can offer injections and monitor the pregnancy to prevent any complications.
In the unlikely event that you may benefit from a blood transfusion, it is also helpful for us to know what your blood group is ahead of time.
Antibodies
Certain antibodies in your blood can affect your baby if they cross the placenta. Early testing allows us to monitor your pregnancy carefully and, if necessary, plan additional scans and consultant input to protect your baby’s health.
Infections (HIV, syphilis, hepatitis B)
These infections can be passed to the baby during pregnancy or birth. If an infection is identified, we can take steps to reduce the risk, including treatment for you during pregnancy and specialised care at birth. Early detection significantly improves outcomes for both you and your baby.
Sickle cell anaemia and thalassaemia (where relevant)
These inherited blood conditions can affect your baby’s health if both parents carry the gene. If testing shows a risk, we can arrange genetic counselling and further testing to understand the likelihood and plan any necessary care.
A space for informed, supported decisions
For some women, blood tests feel straightforward. For others, they can bring questions or hesitation. Both are completely valid.
My role is not to assume, but to ensure you have clear, balanced information so you can make the decision that feels right for you.
You are always in control of your care
Nothing in your care is done to you — it is always done with your consent.
This appointment is about equipping you with knowledge, not pressure.
So whether you choose to go ahead with everything offered, or take more time to consider your options, you will be supported fully.
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