Rapid cancer testing technologies are classified into several core types, each with distinct analytical mechanisms and market implications. Immunoassay‑based platforms, including ELISA and lateral‑flow formats, dominate the point‑of‑care space, capturing roughly 40 % of total units due to low cost and ease of deployment. Molecular‑based assays, encompassing real‑time PCR and isothermal amplification, command about 35 % of the market, driven by higher sensitivity for nucleic‑acid biomarkers and expanding use in personalized oncology. Liquid‑biopsy cartridges, which integrate circulating tumor DNA detection with microfluidic sample processing, account for roughly 15 % of sales, reflecting growing clinician confidence in minimally invasive monitoring. Imaging‑adjunct rapid tests, such as contrast‑enhanced optical probes, hold a niche 5 % share, primarily in specialized oncology centers. Finally, emerging multiplexed platforms that combine protein and nucleic‑acid readouts occupy the remaining 5 %, indicating early‑stage adoption but high growth potential. This taxonomy clarifies how each type contributes to overall market size and informs strategic allocation of R&D resources.