Infectious agent antigen detection by immunofluorescent technique; Herpes simplex virus type 2
CPT4 code
Name of the Procedure:
Infectious Agent Antigen Detection by Immunofluorescent Technique; Herpes Simplex Virus Type 2 (HSV-2)
Summary
This procedure detects the presence of the Herpes Simplex Virus Type 2 (HSV-2) in a patient's sample using an immunofluorescent technique. A special dye is used to highlight viral antigens, making them visible under a fluorescent microscope.
Purpose
Medical Condition or Problem: Identifies active HSV-2 infection. Goals/Outcomes: To confirm the presence of HSV-2, aiding in diagnosis and guiding treatment.
Indications
Symptoms/Conditions: Painful sores or blisters in the genital area, suspected herpes outbreak, or recurrent genital infections. Patient Criteria: Patients with clinical symptoms of HSV-2 or those needing confirmation of HSV-2 infection.
Preparation
Pre-procedure Instructions: No specific preparation required. Diagnostic Tests: May include a physical examination and medical history review.
Procedure Description
Steps:
- A sample, such as a swab from a sore or blister, is collected.
- The sample is placed on a glass slide.
- The slide is treated with antibodies specific to HSV-2 antigens conjugated with a fluorescent dye.
- The slide is examined under a fluorescent microscope.
- Presence of fluorescence indicates a positive result for HSV-2.
Tools/Equipment: Glass slides, immunofluorescent antibodies, fluorescent microscope. Anesthesia/Sedation: Not required.
Duration
Typically takes about 1 to 2 hours, including sample preparation and analysis.
Setting
Performed in a hospital laboratory or specialized diagnostic clinic.
Personnel
Medical laboratory technologists or technicians trained in immunofluorescent techniques.
Risks and Complications
Common Risks: Minimal risks; potential for sample contamination. Rare Risks: False-positive or false-negative results, usually minimized by strict laboratory protocols.
Benefits
Expected Benefits: Accurate and timely identification of HSV-2, enabling appropriate management and treatment of the infection. Realization Timeline: Results are usually available within a few hours to a day.
Recovery
Post-procedure Care: No specific care required post-procedure. Recovery Time: Immediate, as it is a diagnostic test. Restrictions/Follow-up: Follow-up with a healthcare provider for treatment based on the results.
Alternatives
Other Options: Viral culture, PCR testing, and serologic testing for HSV-2 antibodies. Pros/Cons:
- Viral culture: Longer turnaround time, less sensitive.
- PCR: Highly sensitive and specific, but more costly and requires specialized equipment.
- Serology: Identifies past or present infections but may not differentiate between HSV-1 and HSV-2 accurately.
Patient Experience
During: Minor discomfort during sample collection. After: No discomfort, and patients can resume normal activities immediately. Pain Management: Not necessary. Comfort measures during sample collection as needed.