UKMLA PLAB AMC USMLE Prometric MCQ

Question: PLAB MCQ 11
A 3 year old boy is admitted in a confused state following a first seizure. His mother describes her son has recently lost appetite and that over the last few hours before his seizure he seemed anxious and vomited repeatedly. On examination the child is pale and his pulse rate is elevated. His blood blood glucose is 20 mg/dL (normal value 80-90 mg/dL). What would the next investigation of choice be?

a) anti-mitochondrial antibodies
b) urinary magnesium levels
c) salicylate levels
d) paracetomol levels
e) look for lytic lesions on plain radiographs
f) CT of the abdomen
g) lumbar puncture
h) transilluminate scrotum
i) urinary reducing substances
j) fundoscopy