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Related Experiment Videos

A refined method for sequential blood sampling by tail incision in rats.

M Fluttert1, S Dalm, M S Oitzl

  • 1Leiden/Amsterdam Centre for Drug Research, Division of Medical Pharmacology, Leiden, The Netherlands.

Laboratory Animals
|November 10, 2000
PubMed
Summary

A novel rat tail incision method allows for stress-free blood collection without anesthesia. This animal-friendly technique supports longitudinal studies and provides results comparable to traditional methods.

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Area of Science:

  • Veterinary Medicine
  • Animal Physiology
  • Biomedical Research

Background:

  • Blood sampling is crucial for monitoring animal health and research.
  • Conventional methods often require anesthesia or cause stress, impacting results.
  • There is a need for less invasive and animal-friendly blood collection techniques.

Purpose of the Study:

  • To introduce and validate a novel tail incision method for blood collection in rats.
  • To assess the feasibility of sequential and longitudinal blood sampling using this technique.
  • To compare the stress levels and sample quality with conventional methods.

Main Methods:

  • A small incision was made at the end of rat tails for blood collection.
  • Blood samples were collected occasionally and sequentially over a 3-hour period.

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  • Corticosterone levels were measured to assess stress, and compared with samples from intravenous catheters.

    • Main Results:

    • Up to 300 microliters of blood could be collected within 90 seconds.
    • The tail incision method did not require anesthesia or restraint and resulted in low corticosterone levels.
    • Sequential sampling over 3 hours showed minimal stress, and results were comparable to intravenous catheter collection.
    • The method is suitable for longitudinal studies, enabling intra-individual comparisons over extended periods.

    Conclusions:

    • The tail incision method is an effective, stress-free, and animal-friendly alternative for blood collection in rats.
    • This technique facilitates longitudinal studies and reduces the need for invasive procedures.
    • It offers a viable alternative to conventional blood sampling techniques in research settings.