Medical tests Archive

Multi-cancer early detection (MCED) tests offer the potential to detect up to 50 types of cancer from a single blood draw. Most cancer deaths stem from cancers for which there is no screening test. MCED tests may find evidence of less common but more lethal types like ovarian and pancreatic cancer. But before considering one of these tests (which can be requested online), people should understand the limitations, including the high cost and possibility of false positive results.

An apolipoprotein B (apoB) test counts the number of LDL particles in the bloodstream as well as other particles that can contribute to clogged arteries and heart attacks. All of these so-called atherogenic particles carry a single apoB molecule but varying amounts of cholesterol. ApoB values are more closely linked to heart disease risk than LDL cholesterol. People with signs of an unhealthy metabolism-such as prediabetes, a big belly, or elevated triglycerides-are far more likely to have a high apoB.

Elderberry syrup or tea may help reduce the duration and severity of cold and flu symptoms. But the evidence for these benefits is uncertain, since the studies are small and most did not compare elderberry to standard treatments. Claims that elderberry products can prevent viral infections or boost immunity are unproven. Elderberry supplements appear to be relatively safe; in clinical trials, effects such as nausea, vomiting, or diarrhea were mild and rare.

A type of artificial intelligence that uses a deep machine learning tool to analyze different features from routine mammograms can predict a woman's risk of heart-related problems, according to a 2025 analysis.

More men are being diagnosed with prostate cancer, according to a 2025 study. Black men have a higher incidence of cancer and are twice as likely to die from the condition compared with white men.

An x-ray, CT scan, or MRI is usually not needed for addressing low back pain unless people have other symptoms or risk factors for a serious condition. Short-term rest, heat or cold, and over-the-counter medication can ease discomfort until the back pain goes away.