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Histology examination of tissue specimen (grade and characteristics)

Published: August 9, 2026Updated: August 16, 2026

This test involves examining a sample of tissue under a microscope to determine its grade (how abnormal it appears) and other characteristics, often used to diagnose conditions like cancer.

Quick summary

["A microscopic look at tissue helps doctors understand if it’s healthy or abnormal and guides treatment plans."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
33732-9
Short code
Histology grade Ca spec
Synonyms
Histology grade Ca spec
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What This Test Involves

A small piece of tissue is collected (often via biopsy) and prepared for microscopic examination. Pathologists assess cellular structure, patterns, and grade (e.g., well-differentiated, moderately differentiated, poorly differentiated) to identify abnormalities like cancerous growths.

Preparation and Procedure

No special preparation is typically needed unless the biopsy site requires care afterward. Results may take days to weeks, depending on complexity and lab workload.

Common Uses

This test is used to diagnose cancers (e.g., breast, lung, prostate), monitor cancer progression, evaluate precancerous lesions, or assess tissue health in chronic diseases.

How Results Are Interpreted

Pathologists compare tissue appearance to known patterns. Findings may include grade (e.g., Grade 2 = moderate abnormality), presence of cancer cells, or other markers like inflammation or fibrosis.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Results guide treatment decisions, such as surgery, chemotherapy, or radiation. High-grade tissue often indicates more aggressive cancer requiring immediate intervention, while low-grade may suggest slower progression or different management.

Short name

Tissue Pathology Evaluation

Frequently asked questions

Why might I need this test?
You may need this test if you have symptoms like unexplained lumps, persistent sores, unusual bleeding, or if your doctor suspects a cancerous or precancerous condition based on other tests or symptoms.
How is tissue collected for this test?
Tissue is usually obtained via a biopsy—small samples are taken from a needle or surgical procedure. The area may be numbed with local anesthesia. Recovery time varies by procedure.
What does a ‘high-grade’ or ‘low-grade’ result mean?
High-grade tissue often suggests more aggressive cancer cells, while low-grade may indicate slower-growing or less aggressive changes. Your doctor will discuss findings in context with your symptoms and health history.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy