TGFB1 and lip and oral cavity carcinoma: TGF‐β and other cytokines can be measured in saliva samples, and their levels may provide valuable information for oral cancer diagnosis,[3] prognosis, and disease monitoring.[4] However, the concentration of TGF‐β in the saliva is in the range of nanograms per milliliter (picomolar range).[5] To attain precise quantification with elevated specificity, there is a pressing need to develop novel diagnostic tools, designed for streamlined and scalable point‐of‐care diagnostics, ensuring their efficacy in diverse healthcare settings.