2-Amino-4-hydroxypteridine/Creatinine &#x7C; Serum or Plasma &#x7C; Chemistry - non-challenge
2-amino-4-hydroxypteridine/creatinine &#x7c; serum or plasma &#x7c; chemistry - non-challenge
2-Amino-4-hydroxypteridine/Creatinine &#x7C; Serum or Plasma &#x7C; Chemistry - non-challenge
2-amino-4-hydroxypteridine/creatinine &#x7c; serum or plasma &#x7c; chemistry - non-challenge