Tyrosine

Tyrosine or 4-hydroxyphenylalanine is one of the 22 amino acids that are used by cells to synthesize proteins. It is a non-essential amino acid with a polar side group.

Tyrosine

^$55

Average competitors price

^$120

Pricing based on average direct to consumer pricing.

WHAT IT TESTS: Measures tyrosine levels.
WHY TAKE IT: Screen for genetic defects in newborns.
REQUIRES FAST? No.