According to the World Health Organization (WHO) and Centers for Disease Control (CDC), anaemia in pregnancy is defined as a haemoglobin concentration below:

• A 12.0 g/dL
• B 11.0 g/dL ✓
• C 10.0 g/dL
• D 9.0 g/dL

Explanation

WHO defines anaemia in pregnancy as haemoglobin below 11.0 g/dL, a lower cut-off than the non-pregnant value because of physiological haemodilution. The nadir of the dilution falls in the second trimester around 28 to 32 weeks. A cut-off of 10 g/dL is used by some older Indian texts for 'mild' grading within the anaemic range, but the diagnostic threshold itself is 11 g/dL.

Reference: Williams Obstetrics, 26th ed.

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Written and medically reviewed by the StethoPrep medical team.