In nature, methane is produced by the anaerobic bacterial decomposition of vegetable matter under water (where it is sometimes called marsh gas or swamp gas). Wetlands are the major natural source of methane produced in this way.
What are the exams and tests for renal artery stenosis? Blood tests. Screening blood tests may be done as part of the general evaluation of high blood pressure and may include a complete blood count, electrolytes, kidney function tests, and a urinalysis. Imaging. Renal artery narrowing can be detected with ultrasound or computerized tomography angiography or arteriography.
Spontaneous coronary artery dissection (SCAD) Diagnosis. To diagnose spontaneous coronary artery dissection (SCAD), your doctor may review your signs and symptoms, and order several tests. The tests are similar to those used to evaluate other heart attacks, such as electrocardiograms and blood tests to detect blood damage.