Knowledge Base › Troubleshooting Atlas › Embedding
Tissue embedded in the wrong orientation
What it looks like
Tissue sections may appear distorted or cropped, affecting the visibility of key structures. The orientation may be inconsistent with expected anatomical landmarks.
Where it usually appears: Typically observed during routine embedding or when reviewing blocks prior to sectioning.
Likely causes
- Improper handling of tissue during processing
- Inadequate orientation during embedding
- Failure to follow embedding protocol
Immediate checks
- Verify the orientation of the tissue in the embedding mold
- Check for any visible marks or indicators on the tissue
Corrective action
- Re-embed the tissue in the correct orientation
- Consult with a colleague for a second opinion on orientation
Preventive action
- Ensure proper training for all personnel on embedding techniques
- Use orientation markers on the tissue prior to embedding
This atlas is for educational purposes for laboratory professionals. It does not replace your institutional SOPs, manufacturer instructions, validated protocols or pathologist judgment. Adapt any action to your laboratory and equipment.
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