Methylmalonylcarnitine (C4-DC)/3-Hydroxyisovalerylcarnitine (C5-OH) &#x7C; DBS &#x7C; Chemistry - non-challenge
methylmalonylcarnitine (c4-dc)/3-hydroxyisovalerylcarnitine (c5-oh) &#x7c; dbs &#x7c; chemistry - non-challenge