Elicit: Particulate Profile of IV Fluids (public)
What is the visible/subvisible particulate profile (USP <788>) of IV fluids in bags with vs without overwrap?
Abstract
Intravenous fluid studies show only limited, non‐standardized observations related to visible or subvisible particulates as defined by USP <788> in bags with versus without overwrap. Fekete et al. (2014) noted that an overpouch can allow migration of a slip additive (erucamide) during autoclaving, manifesting as opalescence, yet no particulate counts were provided. Gabay and von Martius (2008) reported that fully collapsible bags revealed no visible particulates by visual inspection, whereas one study measuring microplastics/nanoplastics (Mou et al., 2024) found levels of 1.0 ± 0.7 μg/L in bags and 8.4 ± 3.6 μg/L in tubing. Signoretti et al. (1988) documented particulate contamination in large volume injectables—with 20% of samples showing particles exceeding 20 μm—and identified fibers, manufacturing debris, and other materials as contaminants.
None of the reviewed abstracts employed USP <788> methods or directly compared particulate profiles in IV bags with versus without overwrap in a quantitative, standardized fashion.
Methods
We analyzed 5 sources from an initial pool of 998, using 7 screening criteria. Each paper was reviewed for 5 key aspects that mattered most to the research question. More on methods
Papers identified with Elicit search
- n = 998
- Papers screened using: Comparison Groups, Container Type, Outcome Measurement, Measurement Methodology, Clinical Relevance, Study Design, Particulate Source
- n = 998
- Papers screened out
- n = 993
- Papers included for extraction
- n = 5
Paper search
Using your research question “What is the visible/subvisible particulate profile (USP <788>) of IV fluids in bags with vs without overwrap?”, we searched across over 126 million academic papers from the Semantic Scholar corpus. We retrieved the 998 papers most relevant to the query.
Screening
We screened in sources based on their abstracts that met these criteria:
- Comparison Groups: Does the study compare IV fluid bags with overwrap versus those without overwrap?
- Container Type: Does the study examine intravenous fluids stored in flexible bags or containers (not rigid containers like glass vials or ampoules)?
- Outcome Measurement: Does the study measure visible and/or subvisible particulate matter?
- Measurement Methodology: Does the study use USP <788> methodology or equivalent international standards (Ph. Eur. 2.9.19, JP 6.06) for particulate measurement?
- Clinical Relevance: Does the study involve commercially available IV solutions or clinically relevant formulations?
- Study Design: Is the study an experimental study, observational study, systematic review, or meta-analysis (not a case report, editorial, letter, or conference abstract)?
- Particulate Source: Does the study focus on particulate matter related to packaging/storage factors rather than exclusively on particulates from drug incompatibilities or precipitation reactions?
Data extraction
We asked a large language model to extract each data column below from each paper. We gave the model the extraction instructions shown below for each column.
Study Design:
- Observational study with comparative and laboratory analysis elements
Particulate Matter Analysis Method:
- Analytical technique: Visual inspection
- Equipment/protocols: Not mentioned
- Number and size of particles: Not mentioned
- USP <788> compliance: Not mentioned
Key Particulate Matter Findings:
- Containers A and B exhibited no visible particulate matter after puncture. No quantitative results or statistical significance mentioned.
Characteristics of Included Studies
| Study | Study Focus | Container Types | Detection Method | Key Measurements |
|---|---|---|---|---|
| Sundström et al., 2010 | Particle concentrations in small volume parenterals (blow-fill-seal) | No mention found | No mention found | No mention found |
| Fekete et al., 2014 | Opalescence and additive migration in plastic infusion packaging | No mention found; overpouch present | Gas chromatographic-mass spectrometry (GC-MS); autoclaving | Identification of 13-docosenamide (erucamide) migration; opalescence (cloudiness) observation |
| Gabay and von Martius, 2008 | Comparative evaluation of intravenous container types | Two fully collapsible bags (A, B); one semi-rigid (C) | Visual inspection (for particulates) | No visible particulate matter in fully collapsible bags (A/B) after puncture; other performance metrics |
| Mou et al., 2024 | Microplastics/nanoplastics in intravenous fluids from bags and tubing | Infusion bags and tubing (types not specified) | Mie scattering spectra | Microplastics/nanoplastics (M/NPs) content (μg/L), composition (fibers, polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC)), tubing as main source |
| Signoretti et al., 1988 | Particulate contamination in large volume injectables | No mention found | Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) | Variability in contamination; 20% samples with particles >20 μm; fibers (textile, cellulose, plastic), debris |
Effects
Particulate Levels in Overwrapped Versus Non-Overwrapped Containers
| Study | Container Configuration | Particulate Concentration | Particle Size Range | Contamination Source |
|---|---|---|---|---|
| Fekete et al., 2014 | Overpouch (with/without slip additive) | No mention found (opalescence observed) | No mention found | Migration of 13-docosenamide from overpouch |
| Gabay and von Martius, 2008 | Fully collapsible (A/B), semi-rigid (C) | No visible particulates in fully collapsible bags (A/B) | No mention found | No mention found |
| Mou et al., 2024 | Infusion bags and tubing (no overwrap info in abstract) | Bags: 1.0 ± 0.7 μg/L; Tubing: 8.4 ± 3.6 μg/L | No mention found | Bags: fibers, polyethylene (PE), polypropylene (PP); Tubing: polyvinyl chloride (PVC), fibers |
| Signoretti et al., 1988 | No mention found | No mention found | 20% samples with particles >20 μm | Fibers (textile, cellulose, plastic), manufacturing debris |
Material Migration and Contamination Sources
- Fekete et al., 2014: Migration of a slip additive (erucamide) from the overpouch to the primary bag during autoclaving was observed, resulting in opalescence (cloudiness).
- Mou et al., 2024: Infusion tubing was identified as the main source of microplastics/nanoplastics exposure during intravenous therapy.
- Signoretti et al., 1988: Fibers and other particulates from manufacturing and packaging processes were observed, with significant variability between samples.