NSCA Coach 1.4 | Page 22

A PROACTIVE APPROACH TO HEALTH AND PERFORMANCE—NUTRIENT AND BLOOD TESTING TABLE 1. NORMAL VALUES FOR BLOOD PARAMETERS ITEM OPTIMAL RANGES MALES OPTIMAL RANGES FEMALES Fasting Glucose (mg/dl) 70 – 100 70 – 100 Vitamin B12 (pg/mL) 300 – 1000* 300 – 1000* Vitamin D; serum 25(OH)D (ng/dl) 40 – 70 40 – 70 Ferritin (ng/mL) 20 – 100 40 – 100 * Some believe that vitamin B12 should be at least above 500 pg/mL (24) 22 NSCA COACH 1.4 | NSCA.COM