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.
Mucus is normally clear to opaque in color with any variations from this indicating that bacterial, viral or fungal microorganisms may be present. 1  Yellow Nasal Mucus: This color is often an indicator of a less severe, acute sinus infection. It can also indicate the start of a cold or flu. Yellow nasal mucus may also be a sign of an allergic reaction. A common bacteria Staphylococcus aureus is often responsible for causing markedly yellow mucus.