This test measures how well your kidneys are performing their job of filtering waste from your blood. Creatinine is a chemical compound left over from energy-producing processes in your muscles. Healthy kidneys filter creatinine out of the blood. Creatinine exits your body as a waste product in urine

Zinc can be tested along with other trace elements (e.g iron, copper & selenium) to identify deficiencies where a person may benefit from supplementation. When a person displays clinical symptoms that may be associated with zinc deficiency, the measurement of zinc can determine if supplementation is required.

This test measures the amount of nitrogen in your blood that comes from the waste product urea. Urea is made when protein is broken down in your body. A BUN test is done to see how well your kidneys are working.

A prolactin (PRL) test measures the level of prolactin in the blood. Prolactin is a hormone made by the pituitary gland, a small gland at the base of the brain. Prolactin causes the breasts to grow and make milk during pregnancy and after birth. Prolactin levels are normally high for pregnant women and new mothers.

What is the PSA Test? The PSA test measures the level of prostate-specific antigen in the blood. PSA is a protein produced by the prostate gland, and elevated levels can indicate prostate cancer or other prostate conditions, such as benign prostatic hyperplasia (BPH) or prostatitis. While a high PSA level can suggest cancer, it is not definitive; additional tests may be needed for a conclusive diagnosis​( Comprehensive Cancer Information) When Should You Do the PSA Test? Age Guidelines: The test is typically recommended for men starting at age 50, or earlier for those at higher risk (e.g., family history of prostate cancer). Frequency: Some guidelines suggest annual testing for men over 50, while discussions about the necessity and frequency of screening should be held with a healthcare provider​. Preparation for the PSA Test: Avoid Certain Activities: Ejaculation: Refrain from sexual activity for 24-48 hours before the test, as this can elevate PSA levels​. Exercise: Intense physical activity, such as biking or vigorous exercise, should also be avoided for 48 hours prior to testing​. Medication Considerations: Inform your healthcare provider about any medications you are taking, as some drugs can affect PSA levels​. Fasting: Generally, fasting is not required for this test, but it's always good to follow your healthcare provider's specific instructions​. Recommended Practices Before Testing Consultation: Discuss the benefits and risks of the PSA test with your healthcare provider to make an informed decision based on your health history and risk factors​