Question

A 4-month-old exclusively breastfed infant of African origin presents with bowed legs and delayed gross motor milestones. Examination shows frontal bossing and widened wrists. Which investigation is most likely to confirm the suspected diagnosis?

Accepted Answer

25-hydroxyvitamin D level

Answer

Serum ferritin

Answer

Thyroid stimulating hormone

Answer

Serum cortisol

Answer

Serum insulin-like growth factor 1

Practice question

A 4-month-old exclusively breastfed infant of African origin presents with bowed legs and delayed gross motor milestones. Examination shows frontal bossing and widened wrists. Which investigation is most likely to confirm the suspected diagnosis?