What You Need to Know About Blood Testing Test
Blood tests measure or look at cells, chemicals, proteins, or other substances in your blood. They help diagnose diseases, monitor conditions, check organ function, and more.
What this test measures
Blood tests measure or look at cells, chemicals, proteins, or other substances in your blood.
What your results mean
Reference ranges vary by laboratory and by your age and sex. MedlinePlus does not publish a single normal range for this test — always read your result against the range printed on your own lab report and discuss it with your provider.
Frequently asked questions
What are blood tests used for?
According to MedlinePlus, blood tests are used to help diagnose diseases, monitor chronic conditions, check if treatment is working, see how well organs are working, diagnose bleeding or clotting disorders, and find out if your immune system is fighting infections.
Are blood tests part of a regular checkup?
Yes, MedlinePlus states that blood work is often included as part of a regular checkup.
What do blood tests measure?
Blood tests measure or look at cells, chemicals, proteins, or other substances in your blood, according to MedlinePlus.
Can blood tests monitor chronic conditions?
Yes, MedlinePlus says blood tests are used to monitor chronic diseases or conditions, such as diabetes or high cholesterol.
Do blood tests check organ function?
Yes, according to MedlinePlus, blood tests can check how well your organs are working, including your liver, kidneys, heart, and thyroid.
Related lab tests
Sources
- MedlinePlus: What You Need to Know About Blood Testing — NIH MedlinePlus
Last updated . Information is aggregated from official public sources and is not a substitute for professional medical care.