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.
HCH may refer to: Hampton Court House, an independent school in Surrey, UK. Hexachlorocyclohexane, a group of chemical compounds. Holmes Chapel railway station (National Rail station code), in Cheshire, England.
The PTH test measures the level of parathyroid hormone in the blood. PTH stands for parathyroid hormone. It is a protein hormone released by the parathyroid gland. A laboratory test can be done to measure the amount of PTH in your blood.