Study links canine donor lipaemia to meal timing and diet
Bottom line
A prospective study of 296 healthy canine blood donors found that lipaemic plasma was relatively common, showing up in 11.8% of donations, and was linked to shorter time since the dog’s last meal, higher dietary fat intake, raw diet feeding, and higher triglyceride concentrations. The work, presented at the 2025 ACVIM Forum by Corentin Treich, DVM, of Université de Montréal, suggests that blood banks may be able to reduce discarded plasma units by tightening pre-donation feeding instructions, including a minimum 4-hour fast and extra caution for dogs eating higher-fat or raw diets. (2025acvimforum.eventscribe.net)
Why it matters: Plasma products are a limited clinical resource in veterinary medicine, used for coagulopathies and other critical-care indications, so avoidable loss of units can directly affect availability. Current transfusion guidance generally prioritizes high-quality donor screening and component handling, and this study adds a practical nutrition and scheduling angle: what a donor ate, and when, may be just as important as routine health screening when the goal is to preserve usable plasma. (merckvetmanual.com)
What to watch: Watch for full peer-reviewed publication details, and for whether blood banks formalize fasting and diet-screening protocols for canine donors based on these findings. (2025acvimforum.eventscribe.net)
Key facts
- Study design
- Prospective cohort study
- Sample size
- 296 healthy canine blood donors
- Prevalence
- 11.8% of plasma units were lipaemic
- Associated factors
- Shorter time since last meal, higher dietary fat intake, raw diet feeding, and higher triglyceride concentrations
- Meal timing
- Lipaemic dogs had eaten 3.64 hours before collection, versus 5.94 hours for non-lipaemic dogs
- Presentation
- Presented at the ACVIM Forum on June 19, 2025
- Practical recommendation
- Use at least a 4-hour pre-collection fast
- Practical recommendation
- Use extra caution with higher-fat and raw-fed donors
A new study in healthy canine blood donors points to a simple operational fix for a costly blood-bank problem: feed timing. In a prospective cohort of 296 donor dogs, investigators found that 11.8% of plasma units were lipaemic, with the strongest associations tied to meals given closer to collection, especially within 4 hours, along with higher-fat diets, raw feeding, and higher triglyceride levels. The findings were presented at the ACVIM Forum on June 19, 2025, and align with the study summary provided by the Journal of Small Animal Practice. (2025acvimforum.eventscribe.net)
The issue matters because plasma is not a trivial byproduct of canine donation. Veterinary blood banks separate whole blood into components to stretch scarce donor resources, and plasma remains an important product for managing hemorrhage secondary to coagulopathy and other critical-care needs. When plasma is too lipaemic to use, the system loses part of the value of an otherwise successful donation. More broadly, transfusion medicine literature has long treated lipaemic donations as a quality and safety concern because turbidity can interfere with testing and complicate decisions about component use. (merckvetmanual.com)
According to the ACVIM abstract, all 296 dogs were enrolled through a university blood bank and confirmed healthy through physical examination and complete bloodwork, including total T4. Plasma was graded blindly by two operators using a turbidity chart, with grades 3 and 4 classified as lipaemic. Dogs with lipaemic plasma had, on average, eaten more recently than dogs without lipaemia, 3.64 hours versus 5.94 hours before collection. Meals within 4 hours of donation were much more common in the lipaemic group, and raw-fed dogs were also overrepresented. Dietary fat intake was higher in the lipaemic group, and triglyceride concentrations were markedly higher as well. The authors’ practical conclusion was straightforward: implement at least a 4-hour pre-collection fast, and avoid fatty diets, particularly in raw-fed donors. (2025acvimforum.eventscribe.net)
That recommendation fits with what clinicians already know about lipaemia as a laboratory and transfusion variable, but it sharpens the advice into something blood banks can act on. Prior veterinary literature has shown that lipaemia can distort automated platelet counts in dogs and interfere with some analyte measurements, while broader transfusion commentary has described lipaemic donations as a recurring quality-control problem. In other words, this is not just a cosmetic issue in the centrifuged bag. It can affect whether a product is usable, how confidently it can be assessed, and how much downstream value a donation delivers. (pubmed.ncbi.nlm.nih.gov)
Industry context also makes the findings timely. Plasma use in small animal practice is evolving, and newer products such as canine freeze-dried plasma are expanding access beyond hospitals with full blood-bank infrastructure. At the same time, conventional fresh frozen plasma still depends on high-quality donor collection and processing. AAHA reporting this year quoted emergency and blood-banking clinicians emphasizing plasma’s role in coagulopathies, severe hemorrhage, liver failure, and other urgent settings, underscoring why reducing avoidable product loss matters operationally as well as clinically. (aaha.org)
Why it matters: For veterinary professionals running or referring to donor programs, this study offers a low-cost intervention with immediate workflow implications. Standard donor screening often focuses on infectious disease status, temperament, body size, and general health. These data suggest nutrition history deserves a more formal place in that checklist. A defined fasting window, a review of diet type, and perhaps added scrutiny of high-fat and raw-fed donors could improve component yield without changing collection equipment or staffing. For practices that rely on outside blood banks, the findings may also help explain why some units are lost despite apparently healthy donors. (merckvetmanual.com)
There are still limits to keep in mind. The most detailed public information currently available appears to be the ACVIM research abstract rather than a full paper, so details such as exact multivariable modeling decisions, handling of confounders, and center-specific donor demographics may not yet be fully available. Even so, the signal is clinically plausible and operationally useful: recent feeding and richer diets seem to increase the odds of lipaemic plasma in otherwise healthy donors. That makes this less a niche nutrition finding than a blood-bank efficiency finding. (2025acvimforum.eventscribe.net)
What to watch: The next step is full peer-reviewed publication, ideally with protocol details that blood banks can translate into donor instructions, plus follow-up work testing whether stricter fasting and diet policies measurably reduce discarded plasma units in real-world practice. (2025acvimforum.eventscribe.net)