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The exact number of treatments needed may vary from person to person, but typically, patients require around 3-5 treatments for optimal results

(PubMed) Rosales FJ, Jang JT, Pinero DJ, Erikson KM, Beard JL, Ross AC

While not a standard blood test, more research could help verify if acetyl-L-carnitine is a useful marker of depression

In the INSPIRE cohort of 106 patients with advanced solid tumors treated with pembrolizumab (anti-PD-1 antibody) (NCT03702309) (235), higher serum choline levels were associated with augmented CD8 - T cells and B cells in the tumor stroma, as well as an elevated CD3 + CD8 + cytotoxic T cells to CD3 + CD8 - FOXP3 + T regulatory cells ratio in the tumors (235)