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Records of urinalysis for uroscopy date back as far as 4000 BC, originating with Babylonian and Sumerian physicians. [1] At the outset of the 4th century BC Greek physician Hippocrates hypothesized that urine was a "filtrate" of the four humors, and limited possible the diagnoses resulting from this method to issues dealing with the bladder, kidneys, and urethra. [2]
Samples can also be collected from a urinary catheter or by inserting a needle through the abdomen and into the bladder (suprapubic aspiration). [25] In infants and young children, urine may be collected into a bag attached to the genital region, but this is associated with a high risk of contamination. [ 8 ]
A sample of saliva can also be collected from the mouth. Excision (cutting out), a surgical method for the removal of solid or soft tissue samples. Puncture (also called centesis) followed by aspiration is the main method used for sampling of many types of tissues and body fluids.
Scientists analyzed water samples flowing through eight large publicly owned wastewater plants across the US, all of similar size and using similar technologies to those serving 70% of the population.
Other causes can include acid reflux, asthma, allergies, or other chronic medical conditions, adds Richard Watkins, M.D., an infectious disease physician and professor of medicine at the Northeast ...
“If your cough is not getting better after a week, it is a good idea to check in with your doctor,” says Eric Ascher, D.O., family medicine physician at Northwell Lenox Hill Hospital. But if ...