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Anaemia in pregnancy: what your haemoglobin number means | CION Cancer Clinics
In pregnancy, a haemoglobin below 11 on your report (measured in g/dL) is usually counted as anaemia, a low haemoglobin. Between 7 and 10 is moderate, and below 7 is severe and needs prompt review. Ranges differ a little between laboratories, and one result is read with your symptoms and a repeat test. This page explains the bands, the causes, the risks to you and your baby, and when not to wait. At CION Cancer Clinics, our haematologist cares for anaemia, bleeding, clotting and inherited blood disorders, with ArogyaSri, CGHS and cashless insurance accepted.
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Medically reviewed by Dr. Basudev PokhrelConsultant Haematologist · last reviewed September 2026, next review due September 2027
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On this page
- What haemoglobin level counts as anaemia in pregnancy?
- How low is low? The usual severity bands
- Why does haemoglobin fall during pregnancy?
- What are the risks of anaemia in pregnancy?
- How is anaemia checked and followed up?
- What do families often believe, and what is true?
- Common questions about anaemia in pregnancy
The short answer
What haemoglobin level counts as anaemia in pregnancy?
In pregnancy, a haemoglobin below 11 is usually read as anaemia, which simply means a low haemoglobin. Below 7 is treated as severe and needs prompt attention from your obstetrician. Your report prints the number in g/dL, grams of haemoglobin in each decilitre of blood.
Why the cut-off is lower than before pregnancy
During pregnancy your body makes much more of the watery part of the blood than it makes red cells. The blood becomes a little thinner, so the haemoglobin number drops even in a healthy pregnancy. The threshold allows for this. A result that would look normal before pregnancy can still be low now, and the reverse is also true.
Why one number is not the whole story
Reference ranges differ between laboratories, and some guidelines, including those used in the UK, set a slightly lower cut-off in the later months. A single result is always read alongside how you feel, how far along you are, and a repeat test. A falling trend matters more than one reading that sits just under the line.
This page explains what the numbers mean. It cannot tell you why your own haemoglobin is low or what treatment you need. Your obstetrician or haematologist decides that from your full reports.Reading your result
How low is low? The usual severity bands
These are the bands used by the WHO and by India's national anaemia programme for pregnant women. Your laboratory may print slightly different ranges. All values are in g/dL.
Haemoglobin result
What it usually means
11 or above
Not anaemic by the pregnancy cut-off. Routine checks continue.
From 10 up to just under 11
Mild. Often no symptoms, but the cause still needs finding.
From 7 up to just under 10
Moderate. Treatment is usually started and checked closely.
Below 7
Severe. Needs same-week review by the treating team, sometimes in hospital.
Not sure whether this applies to you?
Ask an oncologistWhy it happens
Why does haemoglobin fall during pregnancy?
The most common reason is low iron. Your baby and the placenta draw on your iron stores, and many women in India start pregnancy with low stores already. Heavy periods before pregnancy, closely spaced pregnancies and a diet low in iron all add to it.
Causes that are not about iron
Not every low haemoglobin is low iron. Low folate or low vitamin B12 can also bring it down, and these are more common in women who eat little or no animal food. Thalassaemia trait, an inherited change in how haemoglobin is made, keeps the red cells small and the count a little low for life. It does not improve with iron, and extra iron can do harm. Worm infections and hidden blood loss from the gut also play a part in some families.
Why finding the cause matters
Taking iron tablets without knowing the cause is common, and it is why some women stay low for the whole pregnancy. Ask whether a ferritin test (a measure of stored iron) has been done, and whether thalassaemia has been ruled out, if your red cells are reported as small.
What is at stake
What are the risks of anaemia in pregnancy?
Mild anaemia that is found and treated rarely causes lasting problems. The risks grow as the haemoglobin falls further and stays low.
For you, day to day
Tiredness that sleep does not fix, breathlessness on stairs, a racing heartbeat, headaches and feeling dizzy when you stand up. Many women put this down to pregnancy itself and do not mention it.
For your baby
Moderate and severe anaemia are linked with the baby being born early and with a lower birth weight. Your baby also builds its own iron stores from yours during pregnancy.
At delivery
Some bleeding at birth is normal. A woman who starts labour already low has less in reserve to cope with it.
This is why teams may
- Plan the place of delivery with care
- Check blood group and keep blood ready
After the birth
Low haemoglobin after delivery makes recovery slower, and it can make breastfeeding and low mood harder to manage. It often needs treatment to carry on after the baby arrives.
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When not to wait for the next check-up
If you are pregnant and feel breathless while resting, have chest pain, faint, have a very fast heartbeat that does not settle, or notice any bleeding from the vagina, go to the nearest emergency department or call 108 the same day. Take your antenatal card and latest blood report with you. Do not wait to see whether it passes.
Through the pregnancy
How is anaemia checked and followed up?
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The first antenatal visit
A complete blood count is done at booking. Besides haemoglobin, look at the red cell size on the report. Small cells point towards low iron or thalassaemia trait, and large cells towards low B12 or folate.
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Finding the cause
If the result is low, your doctor may add a ferritin test and, where red cells are small, a test for thalassaemia called haemoglobin electrophoresis. If you carry the trait, your partner is usually tested as well.
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Treatment starts
Iron tablets are the usual first step for low iron. The dose and the choice of tablet are set by your doctor. Do not change or stop them on your own, even if they upset your stomach. Tell the team, because there are other options.
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A repeat test
The count is checked again to see whether it is rising. If it is not, the team looks again at the cause, at whether the tablets are being absorbed, and at iron given through a drip.
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Later pregnancy and delivery
The count is checked again later in pregnancy. A haematologist is brought in when anaemia is severe, does not respond, or comes with other low counts.
Commonly believed
What do families often believe, and what is true?
"Every pregnant woman is a little anaemic, so it does not matter."
Some fall in haemoglobin is normal, and the threshold already allows for it. A result below the pregnancy cut-off is not normal and deserves a cause and a plan, even if you feel well.
"More iron tablets will fix any low haemoglobin."
Only if the cause is low iron. Thalassaemia trait, low B12 and low folate need a different approach, and doubling tablets without advice mostly adds stomach upset and constipation.
"Iron tablets make the baby too big or darken the baby's skin."
Neither is true. Iron taken as prescribed supports the baby's own iron stores. It does not change the baby's skin colour or cause a difficult delivery.
"Eating dates and jaggery is enough to bring it back up."
Iron-rich food helps keep stores up, but once anaemia is present, food alone is rarely enough in the time a pregnancy allows. Use food alongside the treatment your doctor gives, not instead of it.
Questions we are asked
Common questions about anaemia in pregnancy
My haemoglobin is 10.5 in pregnancy. Is that dangerous?
By the WHO bands it sits in the mild range. It is not an emergency, but it is not something to ignore either. Ask what the cause is, whether a ferritin test has been done, and when the repeat test is due. How you feel and whether the number is rising or falling matter as much as the single result.
Can anaemia in pregnancy harm my baby?
Mild anaemia that is treated rarely does. Moderate and severe anaemia, especially when it lasts, is linked with an early birth and a smaller baby. That is the reason your team checks the count more than once and acts on a low result. Treating it during pregnancy lowers that risk.
Why is my report normal but my doctor still says my iron is low?
Haemoglobin can stay in range while your iron stores are already running out. A low ferritin shows this earlier. In pregnancy your doctor may treat low stores before the haemoglobin falls, because the demand for iron keeps rising as the baby grows.
Will I need a blood transfusion?
Most women do not. A transfusion is usually kept for severe anaemia close to delivery, heavy bleeding, or symptoms such as breathlessness at rest. The decision is made by your treating team from your result, your symptoms and how far along you are. It is not something to ask for or refuse on the number alone.
I have thalassaemia trait. What does that change?
Your haemoglobin may sit a little low for life, and iron will not raise it unless you also have low iron. Your partner should be tested, because if both of you carry a trait, the baby could inherit a more serious form. Your obstetrician can arrange counselling and testing early in pregnancy.
The iron tablets make me vomit. Can I stop them?
Please do not stop on your own. Tell your doctor, because there are several options, including a different tablet, a change in how you take it, or iron given through a drip later in pregnancy. Stopping quietly is one of the most common reasons haemoglobin does not rise.
When should I see a haematologist rather than only my obstetrician?
When anaemia is severe, when it does not improve with treatment, when the red cells are an unusual size, or when your platelets or white cells are also abnormal. A haematologist looks for less common causes and works alongside your obstetrician rather than replacing them.
Does anaemia go away after delivery?
Not by itself. Bleeding at birth often lowers the count further, and breastfeeding keeps the demand for iron going. Many women need treatment to continue after the baby is born. Ask for a repeat blood count at your postnatal visit, and keep taking what has been prescribed until you are told otherwise.
Your Haematologist
Meet CION's haematologist. One specialist for your blood report and your plan.
Dr. Basudev Pokhrel reviews blood counts, transfusion needs and blood disorders, and works with the CION tumour board on blood cancers.
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Sources
- World Health Organization — Anaemia fact sheet
- NHS — Iron deficiency anaemia
- Ministry of Health and Family Welfare, India — Anemia Mukt Bharat programme
- NHLBI — Anemia
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
Related pages
IV Iron in PregnancyWhen tablets are not enough, and whether a drip is safeHaemoglobinopathy Screening in PregnancyIf your red cells are small or you carry a traitPostpartum Haemorrhage and Iron RecoveryGetting your count back up after the birthBenign Haematology in PregnancyAll our guides to blood problems in pregnancy
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Haemoglobin low and not rising?
Share your blood reports with us. CION's haematology team will look at the full picture and work alongside your obstetrician on the next step.