Anaemia in Pregnancy: Symptoms, Norms and Treatment

Reviewed by the LabReadAI medical team
Anaemia in Pregnancy: Symptoms, Norms and Treatment

Anaemia in pregnancy is one of the most common deviations: a growing baby and a rising blood volume increase the need for iron. Let's break down what haemoglobin counts as low, why anaemia is dangerous for mother and baby and how it is correctly replenished.

What Haemoglobin Counts as Low

In pregnancy the lower limit of haemoglobin is slightly below usual — due to blood "dilution". Anaemia is a haemoglobin below ~110 g/L in the 1st and 3rd trimesters and below ~105 g/L in the 2nd. More — haemoglobin norm. Grades: mild (~90–110), moderate (~70–90), severe (below 70).

The Role of Ferritin

Haemoglobin falls only with a marked deficiency, while ferritin (the iron store) drops earlier. So a hidden iron deficiency is caught by low ferritin before anaemia — letting correction start sooner.

Symptoms of Anaemia

  • weakness, fatigue, drowsiness;
  • pallor, dizziness, shortness of breath on exertion;
  • brittle hair and nails, cravings for unusual "tastes" (chalk, ice).

Many of these are blamed on the pregnancy itself, so anaemia is easier to catch by tests than by sensations.

Why It Is Dangerous for Mother and Baby

Marked anaemia raises risks for the pregnancy and is linked to fetal growth restriction, preterm birth, and harder-tolerated blood loss in labour. So it matters to detect and treat without delay.

How It Is Treated and Iron Replenished

The basis is iron supplements in an adequate dose as prescribed by a doctor (plus diet: meat, liver). Control is by haemoglobin and ferritin over time. More on doses — iron in pregnancy. Choosing high doses on your own is unwise.

To understand your haemoglobin and ferritin in plain language, upload the form (PDF or photo) to the lab results interpretation service: the AI will explain the markers for the dates. This helps you understand the result, but treatment is prescribed by a doctor.

This article is informational. Diagnosis and treatment of anaemia are the doctor's job.

Frequently asked questions

  • Anaemia is a haemoglobin below ~110 g/L in the 1st and 3rd trimesters and below ~105 g/L in the 2nd — the lower limit is slightly below usual due to blood 'dilution'. Grades: mild ~90–110, moderate ~70–90, severe below 70. More — haemoglobin norm.

  • Ferritin reflects the iron store and drops before haemoglobin, so a hidden iron deficiency shows by low ferritin before anaemia. That lets correction start sooner. Haemoglobin and ferritin are assessed together — it is clearer whether there is an iron deficiency.

  • Marked anaemia is linked to fetal growth restriction, a risk of preterm birth and harder-tolerated blood loss in labour, while weakness and breathlessness exhaust the mother. So anaemia matters to detect and treat without delay — mild anaemia is corrected with iron and diet under test control.

  • The basis of treatment is iron supplements in an adequate dose as prescribed by a doctor, plus diet (meat, liver). Control is by haemoglobin and ferritin over time. The doctor chooses the dose — more in iron in pregnancy. Taking high doses on your own is unwise.

  • Yes, to understand the form. Upload the result (PDF or photo) to the lab results interpretation service — the AI will explain haemoglobin, ferritin and other markers against 'pregnancy' norms in plain language. This helps you understand the result, but treatment of anaemia is prescribed by a doctor.

For informational purposes only

This article is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Please consult a healthcare professional for medical guidance.

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