A complement C4 (also known as a complement component 4, or simply C4) is a test to measure the level of C4 proteins you have in your blood. These proteins play a role in how your immune system ...

Brad Reisfeld is a professor of chemical and biological engineering, biomedical engineering, and public health at Colorado State University. Your blood serves numerous roles to maintain your health.

Medically reviewed by Benjamin Leach, MD Key Takeaways MCHC measures how much hemoglobin is in red blood cells.Low MCHC can ...

Over 20% of people with the Duffy null variant are wrongly labelled ‘abnormal’, by current blood test ranges, leading to ...

When it comes to maintaining health, it can be helpful to understand an optimal baseline for some matters. Learning a healthy weight range for your height, age, and gender, for instance, can be useful ...

Hematocrit is the percentage of red blood cells in a person‘s blood. A typical hematocrit range in adults is 36–54%. However, age, sex, and health conditions can influence hematocrit levels. Low red ...

A normal fasting blood sugar level for someone between the ages of 50 and 60 is between 70 and 99 mg/dL. Blood sugar (glucose) targets for older people with diabetes tend to be different than for ...

The blood test that detects nicotine is called a cotinine test. It measures recent tobacco use and exposure. Cotinine is a chemical that comes from the breakdown of nicotine in the body. A blood test ...

July 29 (Reuters) - Guardant Health (GH.O), opens new tab said its blood test to detect cancer that starts in the colon or rectum got an approval from the U.S. Food and Drug Administration, with the ...