I'm curious if these findings can tell me something about my metabolism. I'm unable to interpret them. During a 24-hour urinary catecholamine test, the morning urine had <0.003 mg/L epinephrine, ie. below detection limit. The 24-hour value for epinephrine was the same. Similarly, a morning blood insulin test showed <2 uUI/mL Insulin, ie. below detection limit. The reference bounds are 4-25.