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www.reference.com/article/psa-test-b2629a83c4dd769b

A prostate-specific antigen, or PSA, test is intended to measures the level of PSA in the blood. Prostate-specific antigen is a protein that is produced in the prostate gland. This test is carried out by a doctor when trying to diagnose the presence of cancer.

www.reference.com/article/normal-psa-level-e9a0f4ca6762aeba

According to WebMD, PSA stands for prostate-specific antigen, a substance produced by the prostate gland. High levels suggest a risk of prostate cancer, and levels between 2.5 and 4 nanograms per milliliter of blood are usually considered normal.

www.reference.com/article/calculate-average-velocity-d62acdc4b477760f

Calculate average velocity by finding the quotient of the displacement and the total time elapsed. For problems concerning velocity, it is important that you consider the starting and ending position, especially if they are the same. Remember that speed and velocity differ, as speed concerns the tot

www.reference.com/science/calculate-resultant-velocity-44294242a4bb1a5e

Resultant velocity is the vector sum of all given individual velocities. Velocity is a vector because it has both speed and direction. There are many ways to calculate vector sums, such as using a vector addition diagram, but using trigonometry to calculate vector components is usually more efficien

www.reference.com/article/correct-psa-level-60ed6123d96360ef

Most men have a prostate-specific antigen, or PSA, level of 4 and under, according to WebMD. This is the cutoff level for most doctors when determining prostate cancer risk. Men with prostate-specific antigen levels higher than 4 are more at risk of prostate cancer, though any man may develop it.

Abnormal levels of PSA, or prostate-specific antigen, generally do not exist, states the National Cancer Institute. Historically, PSA levels above 4.0 nanograms per milliliter often required a prostate biopsy to test for cancer, but studies show that prostate cancer can exist in patients with PSA le

www.reference.com/article/increases-psa-levels-ef3c906633e3ef25

An increase in protein-specific antigen (PSA) levels may be associated with many medical conditions that can affectthe prostate gland, such ascancer, benign prostatic hyperplasia, prostatitis and an infection. Another factor that alsomay raise the PSA level is the aging process, relates MedicineNet.

www.reference.com/article/healthy-psa-level-3c2595109f1c2fa0

Most doctors consider prostate-specific antigen levels of up to 4.0 ng/mL in the blood as healthy, states the National Cancer Institute. The PSA test is one of the primary methods that doctors use to check for prostate cancer in men.

www.reference.com/article/psa-tests-accurate-9432d58b153cdfca

PSA tests are not always accurate, according to Mayo Clinic. PSA testing is often used to diagnose prostate cancer by identifying the level of prostate-specific antigens, or PSA, present in the bloodstream. However, as WebMD points out, this is a factor that cannot be reliably used to diagnose prost

www.reference.com/article/psa-count-6-5100895e348d58a8

In the past, a PSA of 6 may have indicated the presence of prostate cancer. However, according to the National Cancer Institute, new research indicates that healthy prostate function can produce a PSA of 6 or higher.

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