Beyond Use Date for Liquid Mixes

Home Parenteral Nutrition (HPN) Liquid Admixtures

• The American Society for Parenteral and Enteral Nutrition recommends that the hanging time for home parenteral nutrition (HPN) admixtures should not exceed 24 hours, with the giving set changed upon each new dosing 1, 2, 3, 4
• Customized all-in-one (AIO) admixtures require cold chain maintenance during transport and at the patient's home to preserve stability and prevent degradation 1, 2, 3, 4
• Labels must indicate the date of manufacturing and expiring along with patient name, composition, storage instructions, and infusion rate to prevent medication errors 1, 2, 3, 4
• Drug admixing into AIO admixtures should be avoided unless specific pharmaceutical compatibility data are documented, as these mixtures have high potential for drug interactions leading to incompatibilities or stability issues 1, 3, 4

Allergen Immunotherapy Extract Dilutions

• The American Academy of Allergy, Asthma, and Immunology (AAAAI) recommends that the expiration date of any allergen extract dilution must not exceed the expiration date of the earliest expiring constituent added to the mixture 5, 6, 7
• Allergen extracts must be stored at 4°C (refrigerated) to minimize potency loss, as higher temperatures accelerate deterioration 5, 6, 7
• Extracts beyond the manufacturer's expiration date must be discarded, as emphasized by the AAAAI, American College of Allergy, Asthma, and Immunology (ACAAI), and Joint Council of Allergy, Asthma, and Immunology (JCAAI) 5, 8
• Allergen extract dilutions must be bacteriostatic, containing either phenol concentrations of at least 0.25% or glycerin concentrations of at least 20% if phenol is less than 0.25% 5
• Using expired extracts risks unpredictable patient responses due to unknown potency and potential treatment failure from subtherapeutic dosing 8

Cold Chain Requirements for 3‑in‑1 Parenteral Nutrition

Storage and Handling

• A continuous cold chain (2 – 8 °C) must be maintained from compounding, through transport, to the point of administration; the infusion bags should be kept at approximately 4 °C until immediately before use to preserve the stability of the admixture. 9

• The same cold‑chain mandate is confirmed, underscoring that strict temperature control is essential for the safety and stability of 3‑in‑1 total parenteral nutrition solutions. 10