Erythrocytes 4.14 hematocrit 35.1 hemoglobin 11.7 any cause for concern? what can cause these low numbers? i am a male.

No sweat: Those numbers are still considered normal, albeit on the low end, perhaps. I wouldn't get too worked up. You can repeat them in 3-4 months if there's concern. Watch for changes in stool color or size. You could try an iron supplement, or just take in a better supply of red meats and dark green , leafy vegetables. Your doctor can guide you. Good luck.