acetic acid exp date

Hey guys, I made 8.5cc of acetic acid about 9months ago, I used 3 or 4cc to recon my igf-1 lr3. back then.I used a 10cc sterile sealed bottle and whatman filter and have done this a few times over the years. I dont wana waste my igf-1 by using the AA if its no good.. I am guesing its good but...