Ask your doctor about getting a blood test for kidney problems. Kidney problems generally don’t cause symptoms until they’re more advanced. A basic metabolic panel (BMP) is a standard blood test that can be done as part of a routine medical exam. It checks your blood for creatinine or urea. These are chemicals that leak into the blood when the kidneys aren’t working properly. A BMP can detect kidney problems early, when they’re easier to treat. You should be tested annually if you have diabetes, heart disease, or high blood pressure.
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Testosterone can be administered parenterally , but it has more irregular prolonged absorption time and greater activity in muscle in enanthate , undecanoate , or cypionate ester form. These derivatives are hydrolyzed to release free testosterone at the site of injection; absorption rate (and thus injection schedule) varies among different esters, but medical injections are normally done anywhere between semi-weekly to once every 12 weeks. A more frequent schedule may be desirable in order to maintain a more constant level of hormone in the system.  Injectable steroids are typically administered into the muscle, not into the vein, to avoid sudden changes in the amount of the drug in the bloodstream. In addition, because estered testosterone is dissolved in oil, intravenous injection has the potential to cause a dangerous embolism (clot) in the bloodstream.