Table 1 Laboratory studies done in patients with KH (N = 62)

Glucose

Mean 37.3 ± 10.4 mg/dL

(2.1 ± 0.6 mmol/L

Serum CO₂

Mean 17.8 ± 3.9 mmol/L

< 18 mmol/L in 58%

Serum cortisol

Mean 17.4 ± 9.8 μg/dL (480 ± 270 nmol/L)

>  10 μg/dL (> 276 nmol/L) in 84%

Serum growth hormone

<  7 ng/ml in 76%

Serum insulin

<  2 mIU/L in 23; 2–4.4 mIU/L in 4

Fasting study

None provided diagnosis other than KH

Plasma amino acids and urine organic acids +/− carnitine profile

None were diagnostic