Short Description

Used to stain glycogen and mucin in tissues.

PreTest Information

Brief clinical history in Histopathology Requisition Form (Form 2) is mandatory.

Detail Description

HISTOPATHOLOGY SPECIAL STAIN: PERIODIC ACID SCHIFF (PAS) Test cost INR:631.8 symptoms diagnosis

Periodic Acid Schiff (PAS) stain is a special staining technique used in histopathology to identify carbohydrates and other substances in tissue samples. This test is used to diagnose a variety of conditions, including fungal infections, liver diseases, and certain types of cancer.

What is a PAS test?

A PAS test is a type of special staining technique used in histopathology to identify carbohydrates and other substances in tissue samples. The test involves staining the tissue sample with a solution of periodic acid, followed by treatment with Schiff's reagent. This causes the carbohydrates in the tissue to become visible under a microscope.

Why is a PAS test performed?

A PAS test is performed to diagnose a variety of conditions, including:

• Fungal infections
• Liver diseases
• Certain types of cancer

By identifying the presence of carbohydrates in tissue samples, a PAS test can help doctors to diagnose these conditions and determine the best course of treatment.

What are the symptoms of conditions diagnosed with a PAS test?

The symptoms of conditions diagnosed with a PAS test can vary depending on the specific condition being diagnosed. Some common symptoms of fungal infections include:

• Redness and itching
• Rash or blisters
• Skin discoloration
• Hair loss
• Fever
• Chills

Common symptoms of liver diseases include:

• Yellowing of the skin and eyes (jaundice)
• Abdominal pain and swelling
• Nausea and vomiting
• Loss of appetite
• Dark urine and pale stools

The symptoms of cancer can vary depending on the location and type of cancer. Some common symptoms of cancer include:

• Lumps or growths
• Unexplained weight loss
• Fatigue
• Persistent pain
• Fever

How is a PAS test performed?

A PAS test is typically performed on tissue samples obtained through a biopsy or surgery. The tissue sample is first fixed in a solution to preserve its structure, and then embedded in paraffin wax. Thin sections of the tissue are then cut and placed on glass slides.

The tissue sections are then stained with a solution of periodic acid, which oxidizes any carbohydrates present in the tissue. The tissue is then treated with Schiff's reagent, which causes the carbohydrates to become visible under a microscope.

What is the cost of a PAS test in India?

The cost of a PAS test in India typically ranges from INR 500 to INR 1000, depending on the laboratory and location. DNA Labs India offers a PAS test at a cost of INR 631.8.

Conclusion

A PAS test is an important diagnostic tool used in histopathology to identify carbohydrates and other substances in tissue samples. This test can help to diagnose a variety of conditions, including fungal infections, liver diseases, and certain types of cancer. If you are experiencing symptoms of any of these conditions, talk to your doctor about whether a PAS test may be right for you.

Remember, early diagnosis and treatment can improve outcomes and may even save your life.