B235
Finding a Tail Vein


Fig. 1 Fig. 2 Fig. 3
Clean the underside of the tail thoroughly with alcohol.
The arrow indicates a "valley" where the tail vein can be found. The finger indicates a bony projection that should be avoided.
Once a "valley" has been identified, the needle can be inserted. Often the needle will contact bone. If this occurs, pull back slightly since the vein lies just superficial to the bone.
Once the vein has been identified, blood can be drawn or a low volume (<5 mL) injection can be given. Any blood sample should be immediately tested or placed in the appropriate blood tubes.

 

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