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.
State and local taxes on personal property, such as vehicles, must be ad valorem taxes to be deductible on your federal tax return. Taxes and fees on personal property that aren't based on the item's value are not deductible. For example, when you pay for the license tag for your car, the charges may include both a fee for the tag and an ad valorem tax. Only the ad valorem part can be taken as a deduction. The tax must be assessed and paid during the tax year for which it is claimed. Write-offs for state and local ad valorem taxes are available only if you file IRS Form 1040 and itemize deductions. Other Deductible Taxes. State and local income taxes and sales taxes are tax deductible on a federal tax return. However, you may deduct only one of these in the same tax year.