I've arbitrarily defined 'original members' as those who were mustered in before the end of training, 21 January 1862. Bates lists these final dispositions for the "original members":
| 258 | discharged on surgeon's certificate |
| 156 | deserted |
| 128 | mustered out, with company or regiment |
| 88 | died |
| 64 | not on muster-out roll |
| 58 | mustered out, expiration of term |
| 50 | killed |
| 39 | transferred to Veterans' Reserve Corps |
| 21 | discharged by writ of habeas corpus |
| 20 | not accounted for |
| 19 | absent, sick, at muster out |
| 18 | discharged by general order |
| 14 | transferred to other regiments |
| 12 | discharged [unspecified] |
| 11 | resigned |
| 7 | discharged by special order |
| 5 | absent, in hospital, at muster out |
| 4 | dropped from the rolls |
| 3 | missing in action |
| 3 | discharged, expiration of term |
| 3 | absent at muster out |
| 2 | mustered out, unspecified |
| 2 | discharged to receive commission |
| 2 | discharged for wounds received |
| 2 | absent, on furlough, at muster out |
| 2 | dismissed |
| 2 | transferred to regular army |
| 1 | transferred to US navy |
| 1 | promoted to surgeon 124th regiment PA Volunteer infantry |
| 1 | discharged dishonorably |
| 1 | discharged by sentence of general court martial |
| 1 | absent, under arrest, at muster out |
| 1 | absent, on detached duty, at muster out |
| 1 | absent, wounded, at muster out |
| 1002 | sum |
