So, basically, withholding information is not the same thing as lying, but depending on the situation, you will have to decide whether it is better to withhold the information or not.
Hexachlorocyclohexane (HCH) is a manufactured chemical that exists in eight chemical forms called isomers. One of these forms, gamma-HCH (or Î³-HCH, commonly called lindane) is produced and used as an insecticide on fruit, vegetables, and forest crops.
MCH stands for mean corpuscular hemoglobin. It refers to the quantity of hemoglobin in red corpuscles. To have your MCH blood test results explained you would need to visit the doctor. MCH is determined by the percentage of red cells and the amount of hemoglobin present in blood.