Table 2.

Endocrine and metabolic work-up after presentation.

Laboratory test	Result	Reference range
Thyroid stimulating hormone, mIU/L	<0.02	0.27–4.20
Free thyroxine, pmol/L	12.0	10.5–22.0
Tri-iodothyronine, nmol/L	1.02	1.28–2.33
Follicle stimulating hormone, IU/L	<0.5	1.5–12.4
Luteinising hormone, IU/L	<0.5	1.7–8.6
Oestradiol, pmol/L	224	99–192
Testosterone, nmol/L	23.7	9.9–27.8
Androstenedione, nmol/L	2.7	2.0–5.4
Dihydroepiandosterone, µmol/L	3.6	2.3–10.0
Sexhormone-binding globulin, nmol/L	8.4	14.5–48.4
Cortisol, nmol/L	513	166–507
IGF-1, µg/L	79	71–241
Urine potassium, mmol/L	17
Urine osmolality, mmol/kg	587
Serum potassium, mmol/L	2.6	3.5–4.5
Serum osmolality, mmol/kg	284	275–299
Trans-tubular potassium gradient	2.84	<3*

*Appropriate in hypokalaemia.