Jennah LaHood Siwak, MD on Instagram: "The Galleri test is a blood test that screens for signals of 50+ types of cancer, including some we don’t yet have routine screening tests for. It’s not perfect, but it’s an exciting step toward earlier detection and a promising complement to standard screenings like colonoscopies and mammograms, not a replacement. ✨This test is not routinely recommended. My doctor and I discussed the risks and benefits and decided it was right for me. Important limitations