Fig. 1.

Characteristics and outcomes of all specimens and neonates found to have multiple acylcarnitine elevations with a “GA-II profile” in at least one specimen collected within 30 days of birth. Consultation with a specialist is recommended for all out-of range (OOR) screens with acylcarnitines suggestive of a GA-II profile, regardless of the results of a follow-up screen (if performed). Initial specimens were all collected at 24 to72 h of age and those shown as “Not Initial” specimens were collected at 72 h to 30 days of age. “Not Initial” specimens were collected as per routine rescreening protocols and the initial screens from these neonates were in range. False positives with limited work-up are shown as work-up incomplete. Please see text for details