A 72 year old male presents with a
history of feeling weak and lethargic, he also complained of loss of weight
and feeling nauseated and vomiting.
On examination his skin was pigmented
and there was pigmentation of his palmar creases. BP 100/60 lying 70/50
Sodium 122 mmol/L
Potassium 5.4 mmol/L
Urea 17 mmol/L
Bicarbonate 14 mmol/L
Blood glucose 4.1mmol/L
In this patient which one of the
following investigations would you arrange in order to find out the underlying
cause of the illness?
Short synacthen test