label: Butyrylcarnitine+Isobutyrylcarnitine (C4)/Propionylcarnitine (C3) &#x7C; DBS &#x7C; Chemistry - non-challenge
label_lc: butyrylcarnitine+isobutyrylcarnitine (c4)/propionylcarnitine (c3) &#x7c; dbs &#x7c; chemistry - non-challenge