R- and S-beta aminoisobutyrate and D- and L-serine pattern &#x7C; Serum or Plasma &#x7C; Chemistry - non-challenge
r- and s-beta aminoisobutyrate and d- and l-serine pattern &#x7c; serum or plasma &#x7c; chemistry - non-challenge
R- and S-beta aminoisobutyrate and D- and L-serine pattern &#x7C; Serum or Plasma &#x7C; Chemistry - non-challenge
r- and s-beta aminoisobutyrate and d- and l-serine pattern &#x7c; serum or plasma &#x7c; chemistry - non-challenge