ABSTRACT
Fasting plasma glucose from a sample taken during a severe headache was 8.5 mmol/L.
A repeat 24-hour urine and blood test was arranged – the 24-hour urine was started at the onset of a headache:
Reference range
24-h urine normetanephrine 16.5 μmol/24 h <3.3 μmol/24 h
24-h urine metanephrine 4.9 μmol/24 h <1.2 μmol/24 h
24-h urine methoxytyramine 3.5 μmol/24 h <2.5 μmol/24 h
Chromogranin A 195 pmol/L <60 pmol/L
On the basis of these results, a radioisotope MIBG (iodine-131-meta-iodobenzylguanidine) scan was undertaken.
