Preclinical
Preclinical services
A transparent view of the core workflow we use to move specimens from receipt to stained slides and pathologist evaluation—aligned with how we describe our process on pathxdx.com.
- 1
Accessioning
As specimens are received, they're checked to make sure what is received matches what was sent. A unique code (accessioning number) is assigned to every sample entering our lab.
- 2
Trimming
Every specimen may get a trim or possibly be cut so it fits the standard cassette and mold. The tissue is placed in a pre-labelled cassette.
- 3
Tissue processing
Tissue specimens that have been placed in a pre-labelled cassette go through a vacuumed infiltration process that dehydrates the tissues and infiltrates them in paraffin.
- 4
Embedding
When the tissue cassettes come out of the tissue processor, each individual specimen is embedded into molds. Depending on what the pathologist is hoping to see, a special orientation may be required.
- 5
Sectioning
Blocks are routinely sectioned into 4–5 micron sections on positively charged glass slides unless otherwise requested—for example, special stains, thinner or thicker sections, or curls for DNA/RNA analysis into sterilized tubes.
- 6
Staining
Sections on slides are routinely stained H&E for an initial pathologist reading.
- 7
Special stains
After an initial reading, special stains may be requested. Requestors may ask for any special stain. We maintain an extensive list of what we currently perform; if something is not on our routine list, we can assess or assist with your needs.
- 8
Evaluation
Upon your request, slides will be evaluated by a qualified pathologist. Stains may also be evaluated using software technologies. We partner with sister companies to provide such services at a pass-through cost.
- 9
Pathology reading
Upon your request, slides will be evaluated by a qualified pathologist.
- 10
Immunohistochemistry (IHC)
Based upon your needs we provide IHC services—including routine simple and complex panels, method development, and consultation.
