An ammonia test measures the amount of ammonia in the blood. Most ammonia in the body forms when protein is broken down by bacteria in the intestines . The liver normally converts ammonia into urea, which is then eliminated in urine. Ammonia levels in the blood rise when the liver is not able to convert ammonia to urea. This may be caused by cirrhosis or severe hepatitis. For this test, a blood sample may be taken from either a vein or an artery.
Deduction Amount hide... The deduction is equal to the cost of the vehicle's engine, the equipment used to store or deliver the fuel, and the equipment used to exhaust combusted gases, up to a maximum of $2,000 for vehicles places in service by the end of 2005.
Tax Deductible Car Miles-IRS Standard Mileage Rates. It might not be a car, but it's a way to avoid high gas prices and the gas tax! If you are using your car for qualified business, medical, or charitable purposes, you can deduct your vehicle expenses.he tax deductible standard mileage rates for the use of a car, van, pickup, or panel truck in 2010 are: 1  50 cents per mile for business miles driven. 2  16.5 cents per mile driven for medical or moving purposes.