According to the WHO criteria, anaemia in infants of 6 months age is defined as Hb less than ?
**Core Concept**
Anaemia in infants is defined using the World Health Organization (WHO) criteria, which takes into account the age-specific haemoglobin (Hb) levels. This definition is crucial for diagnosing and managing anaemia in infants.
**Why the Correct Answer is Right**
The WHO criteria for anaemia in infants of 6 months age is based on the median Hb levels in a large population of healthy infants. For infants of 6 months age, the median Hb level is around 110 g/L. Therefore, anaemia is defined as Hb less than 110 g/L. This definition is essential for identifying infants who require treatment for anaemia.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the WHO criteria for anaemia in infants of 6 months age is not less than 90 g/L. This value may be applicable for older children or adults.
**Option B:** This option is incorrect because the WHO criteria for anaemia in infants of 6 months age is not less than 90 g/L. This value may be applicable for older children or adults.
**Option C:** This option is incorrect because the WHO criteria for anaemia in infants of 6 months age is not less than 120 g/L. This value may be applicable for infants of a different age group or with different nutritional status.
**Clinical Pearl / High-Yield Fact**
It is essential to remember that the WHO criteria for anaemia in infants are age-specific, and the definition changes with age. This is crucial for accurate diagnosis and management of anaemia in infants.
**Correct Answer:** C. 110 g/L