Reconstituted peptides mixed with bacteriostatic water can generally be stored safely in the refrigerator for up to 28 days, provided the vial is kept sealed between uses and not exposed to temperature fluctuations or contamination
(2016) Effect of Vitamin B12 supplementation on serum homocysteine in patients undergoing hemodialysis: A randomized controlled trial
It is also worth knowing that sterile water is not the same as saline
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Both patterns are normal
USP 797 doesn't change with vial size The procedural rules under United States Pharmacopeia General Chapter 797 apply identically whether the vial is 10 mg, 20 mg, or 30 mg: Preparation inside an ISO Class 5 primary engineering control That hood inside an ISO Class 7 cleanroom buffer area Gowning sequence and antiseptic hand cleansing before entry Sterile 70% isopropyl alcohol disinfection of vial septa Single-use sterile syringes, needles, and filter needles Documentation of lot numbers, beyond-use dates, and pharmacist signatures What changes with vial size is the number of weekly doses the preparation will support, which affects beyond-use date assignment and the cumulative number of septum punctures
