GMP News: New FDA Guidance to Avoid Overfill of Vials - ECA:
"If a liquid is withdrawn from a vial by means of a syringe, remains of the liquid stay in the vial or on its walls. Since it is nearly impossible to extract 100 % of the liquid but the dosage has to be correct, nevertheless, vials usually are slightly overfilled. A vial with a dosage of 1 ml might for example contain 1.1 ml. The FDA has two points of concern: on the one hand some manufacturers fill up to much or not enough drug products without sufficiently justifying this which may result in medication errors. On the other hand the leftover of several vials with excess volume could be pooled to obtain a further dose which could lead to microbial problems."
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View the guidance:
Allowable Excess Volume and Labeled Vial Fill Size in Injectable Drug and Biological Products - FDA Guidance for Industry (PDF)
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