Influence of a prolonged fasting and mild activity on routine laboratory tests.

Prolonged fasting and mild activity will not influence the medical decision for healthy subjects with normal results, and a statistically significant decrease was found for red blood cell count, hemoglobin, hematocrit, mean corpuscular volume (MCV), GLU, urea, creatinine, triglycerides and electrolytes, whereas white blood cell number and iron were significantly increased.