Molecules called lipoproteins carry cholesterol in the blood. Two important kinds of lipoproteins are low-density lipoprotein (LDL) and high-density lipoprotein (HDL). When checking LDL and HDL, doctors often include another type of fat called triglycerides. 1  Total cholesterol is a measure of the total amount of cholesterol in your blood and is based on the HDL, LDL, and triglycerides numbers. 2  LDL cholesterol makes up the majority of the bodyâs cholesterol.
Is your yellow nasal discharge light or dark? A dark yellow mucus can indicate a sinus infection (but again is not necessarily so) while a light yellow mucus can be produced by dry air and a thick yellow mucus can indicate the presence of a cold that requires one to drink more water.
Yellow snot is a sign of a cold, as it shows white blood cells are rushing to the site of the infection. Green mucus shows the immune system is fighting back as it turns that colour due to dead white blood cells.If mucus is pink or red it means the nasal tissue has become broken and is bleeding. Most people produce about 1.7 litres of mucus a day-enough to fill a kettle. 2  As it is made from water, proteins, antibodies and salts, it should be clear. 3  White snot is a sign of congestion, while yellow snot is signals a cold. 4  Green shows the immune system is working while red snot contains blood.