Here are the steps that could get your arrested for a debt lawsuit in Virginia. The first paper you get is a warrant in debt. Warrant makes it sound worse than it is. (And just ignoring court papers is never a good idea.) The warrant in debt cannot get you arrested.
According to the conversion chart, 1 grain (60 mg) is equal to 100 mcg snythroid, and 90 mg Armour is equal to 150 mcg levo. According to the manufacturer, there is 38 mcg of T4 and 9 mcg T3 in each grain. So if you work it out that way, 90 mg has only 57 mcg of T4 and 13.5 mcg T3.
A gram is defined as one thousandth of a kilogram (which is defined as the mass of a metal reference weight that is stored in Paris.) One gram is about what one cubic centimeter (one milliliter) of water weighs. A US nickel weighs exactly 5 grams. There are 28.3 grams in an ounce, and 453.6 in a pound. Sometimes stuff that is measured in volume in the US is measured in grams in the metric system. For example, a tablespoon of butter (1/8 a stick) is about 15 grams. A milligram is 1/1000 of a gram, and a microgram is one millionth.