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.
To retrieve your original AGI from your previous year's tax return you may do one of the following: 1  Contact the IRS toll free at 1-800-829-1040. 2  Complete Form 4506-T Transcript of Electronic Filing at no cost. 3  Complete Form 4506 Copy of Income tax Return.