PROCEDURE KRYPTOPYRROLE (URINE) CORRECTED (calculated) ** RESULT: 13.04 HIGH PROCEDURE KRYPTOPYRROLE (URINE) UNCORRECTED (actual) RESULT: 7.67 SPECIFIC GRAVITY: 1.010 KRYPTOPYRROLE REFERENCE RANGES: Optimal Range 0-9 mcg/dl Your kryptopyrrole result is not in the optimal range of 0-9. So this basically says that the "uncorrected" result was within range, but when they "correct" it, it's above range. This seems a little suspect to me since there are two results. In any case, I will say that higher dose zinc has noticeably improved my fatigue and even increased my body temp in the last few days. Does anyone know if 13 is a high number or is it slightly above reference?