Blood Drug Testing

which is more invasive can locate a narrowing or blockage

Summary: which is more invasive can locate a narrowing or blockage can measure blood flow and can be used to sample blood for testing In this test your physician injects a contrast dye into your vessels through a small catheter and then takes x rays The structure inside of your vessels appears on the x ray because x rays cannot pass through the dye This test finds the location and pattern of blockages in your kidney blood vessels The dye itself is later excreted through your kidneys and it sometimes can affect their function which allows your physician to see your blood vessels and organs using high frequency sound waves Using ultrasound your physician can locate clots or narrow areas inside your arteries and also determine the size of your kidney which creates detailed three dimensional images from x rays of slices of your body   This study also sometimes uses contrast dye Your physician will recommend the following tests to help determine if you have renal artery stenosis What tests will I need

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