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Horowitz Index (Blood) for Viral Hepatitis G

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

This test measures a specific index related to the presence of Hepatitis G virus in your blood, which helps assess infection status. It’s not a direct viral count but reflects viral activity levels.

Quick summary

["This test helps doctors track Hepatitis G infection progression and response to treatment."]

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

Key facts at a glance

LOINC
50986-9
Short code
Horowitz index BldV+IhG-Rto
Synonyms
Horowitz index BldV+IhG-Rto
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

What This Test Measures

The Horowitz Index is derived from blood samples to evaluate viral load dynamics associated with Hepatitis G virus. It combines multiple measurements to create a composite score that reflects viral replication and immune response.

Why It Matters in Your Care

While Hepatitis G itself rarely causes severe illness, monitoring this index can help identify active infection, guide treatment decisions, and monitor long-term health risks, such as liver damage.

How the Test Works

Your blood sample is analyzed using advanced immunoassay techniques to detect viral markers. The Horowitz Index integrates these results into a standardized score, though exact reference ranges are not universally defined for this index alone.

Sample Collection and Preparation

A blood draw is typically used, collected in a tube that separates serum or plasma for testing. The sample is processed immediately or stored under controlled conditions to preserve accuracy.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Viral Hepatitis G Viral Load Index

Frequently asked questions

This test is primarily used in research or specialized clinical settings to study Hepatitis G infection dynamics, though it may not be standard in routine care. It can support studies on viral load trends, immune response, or treatment efficacy.
The Horowitz Index is not a standard diagnostic tool for Hepatitis G infection in most healthcare settings. If you suspect infection, standard viral load tests (e.g., PCR) are typically preferred.
How often will I need this test?
The frequency depends on your clinical situation. If this test is part of research or monitoring, your healthcare provider will outline the schedule. In routine care, Hepatitis G testing is uncommon and usually tied to specific symptoms or risk factors.
What do abnormal results mean?
Abnormal results may indicate active Hepatitis G infection or viral activity, but interpretation requires clinical correlation with symptoms, medical history, and other diagnostic tests. Consult your provider for personalized insights.
  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