Not to be confused with creatinine. Creatine (/ËkriËÉtiËn/ or /ËkriËÉtÉªn/) is a nitrogenous organic acid that occurs naturally in vertebrates. Its main role is to facilitate recycling of adenosine triphosphate (ATP), the energy currency of the cell, primarily in muscle and brain tissue.
Case 1: You Filed a Previous Year (2014) Tax Return But Do Not Have Access to a Copy of the Return or the AGI. First from the IRS website or call the IRS at 866-704-7388. Here is what you will see on the IRS PIN request site: Note: the image above is for informational purposes and is not interactive.
The AGI number isn't on your W-2. It's on your last year's tax return. You need to know that number to tell the IRS when you e-file this year, so they'll know you're really you. You can get the number by calling them and giving them your name, Social Security number, and address. You make up your own PIN when you file. Here's more info on the e-filing and PIN system: http://www.irs.gov/efile/article/0,,id=1...