Q. How do you cite UpToDate in APA format?

UpToDate is a point-of-care medical & nursing database. The APA uses it as an example of when to put a database name in your reference, since the content comes from the database itself, not other journals: Databases with original, proprietary content

Follow this example from the APA Style website:

References page:

Stein, M. B., & Taylor, C. T. (2019). Approach to treating social anxiety disorder in adults. UpToDate. Retrieved September 13, 2019, from https://www.uptodate.com/contents/approach-to-treating-social-anxiety-disorder-in-adults

In-Text Citations:

• Parenthetical citation: (Stein & Taylor, 2019)
• Narrative citation: Stein and Taylor (2019)