An accurate test for how long does nicotine stay in your system can be performed via blood test. If a laboratory is testing for nicotine, it should be performed within 3 days of smoking. It is better for a laboratory to test for cotinine as it remains in the blood stream for about 10 days after smoking.
The pH in the human digestive tract varies greatly (see Human Digestive Tract pH Range Chart on the left side). The pH of saliva is usually between 6.5 - 7.5. After we chew and swallow food it then enters the fundic or upper portion of the stomach which has a pH between 4.0 - 6.5.he pH of any solution is the measure of its hydrogen-ion concentration. The higher the pH reading, the more alkaline and oxygen rich the fluid is. The lower the pH reading, the more acidic and oxygen deprived the fluid is. The pH range is from 0 to 14, with 7.0 being neutral.
PH literally stands for potential of hydrogen. Water is neutral with a pH of 7.0. Anything below 7.0 is acidic, and anything above 7.0 is alkaline. According to the text, the ideal pH range for the human body is between 6.0 and 6.8.. PH test strips can be purchased so the pH levels can be tested at home. A poor pH balance in the body can cause many health problems and a general feeling of ill health.