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. Author manuscript; available in PMC: 2022 Sep 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2021 Aug 19;32(9):2425–2435. doi: 10.1021/jasms.1c00135

Figure 1.

Figure 1.

Workflow of the suspect screening analysis including the feature MS/MS identification and confirmation steps for the 30 pairs of pregnant women and umbilical cord serum. (*Tiers 1–3 also each include the 100% detection frequency criteria as mentioned in the methods section.)