Question

A 35-year-old man with a known history of Crohn's disease, currently well-controlled on Azathioprine, presents for routine blood monitoring. Which blood test parameter is most crucial to monitor specifically for Azathioprine toxicity?

Accepted Answer

Full blood count (FBC)

Answer

Urea and electrolytes (U&Es)

Answer

Liver function tests (LFTs)

Answer

C-reactive protein (CRP)

Answer

Thyroid stimulating hormone (TSH)

Practice question

A 35-year-old man with a known history of Crohn's disease, currently well-controlled on Azathioprine, presents for routine blood monitoring. Which blood test parameter is most crucial to monitor specifically for Azathioprine toxicity?