Intraperitoneal injection of mice
Related Experiment Videos
Abstract:
Steward, Ornellas, Beernink, and Northway (2) reported a 14% error in the placement of intraperitoneal injections of mice. They considered this error inherent in the technique and not simply correctable. We similarly found an error in the intraperitoneal injection of mice and attempted to identify the cause of error by varying such technical procedures as size of needle, site of penetration (through lower left versus lower right quadrant), investigator, angle of needle to the abdominal wall, and speed of injection. None of these technical modifications consistently eliminated or reduced the error of placement.
Insights
Intraperitoneal injections in mice have a high error rate. Researchers found that modifying injection technique, needle size, or site did not consistently reduce placement errors.
Area of Science:
- Veterinary Medicine
- Animal Research Techniques
Background:
- Intraperitoneal injections are common in mouse research.
- Previous studies reported significant placement errors (14%) inherent to the technique.
Purpose of the Study:
- To investigate and identify causes of error in mouse intraperitoneal injection placement.
- To determine if technical modifications can reduce injection placement errors.
Main Methods:
- Systematically varied technical parameters of intraperitoneal injection in mice.
- Parameters included needle size, injection site (left vs. right quadrant), investigator, needle angle, and injection speed.
Main Results:
- Consistent errors in intraperitoneal injection placement were observed.
- None of the tested technical modifications (needle size, site, investigator, angle, speed) reliably reduced placement errors.
Conclusions:
- The error in mouse intraperitoneal injection placement appears to be a persistent challenge.
- Further research may be needed to develop more accurate injection methods.