Embodiments of the present disclosure provide for labeled probes such as a 3-18F-fluoropicolinamide probe, methods of making labeled probes, pharmaceutical compositions including labeled probes, methods of using labeled probes, methods of diagnosing, localizing, monitoring, and/or assessing melanin related diseases, cancers, tumors, precancerous cells, and related biological events (e.g., malignant melanoma), using labeled probes, kits for diagnosing, localizing, monitoring, and/or assessing melanin related diseases, cancers, tumors, precancerous cells, and related biological events, using labeled probes, and the like.