>>127371Iron levels and how oxygenated blood is does in fact effect the taste. Iron content isn't going to vary from one body part to another but it can from person to person, oxygen levels can be a tiny bit lower in the outer exterminties like the finger tips but for the most part is also the same though since it's oxygenated blood that rushes to minor injuries to aid in healing, the only time you'll normally see deoxygenated is in deep wounds.
Unless one is willing to tap a vein to draw deoxygenated blood which has a lower ph, more waste products, and less glucose the biggest difference one would notice is of they had low iron levels or actually gotten to the point of becoming anemic and began taking iron supplements.
