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. 2020 Jan 31;3(1):e1920356. doi: 10.1001/jamanetworkopen.2019.20356

Figure 2. Follow-up Protocol for Screen-Positive Specimens.

Figure 2.

The flowchart shows the protocol for confirmatory testing and short-term follow-up of screen-positive specimens through diagnosis. ABCD1 indicates the adenosine triphosphate–binding cassette subfamily D member 1 gene; DBS, dried blood specimen; NCSLPH, North Carolina State Laboratory of Public Health; UNC, University of North Carolina; VLCFA, very long-chain fatty acid; VUS, variant of unknown significance; and X-ALD, X-linked adrenoleukodystrophy.