Helicobacter pylori IgG antibodies
Detects IgG antibodies to Helicobacter pylori — indicator that organism contacted bacteria causing chronic gastritis and peptic ulcer.
IgG is often used as a screening test but has important features:
- IgG may be positive with current or past infection;
- antibodies may persist long after successful treatment;
- therefore IgG is not ideal for treatment monitoring (breath test or stool antigen are preferred for monitoring).
Infection routes:
- contact-household (dishes, saliva);
- poor hygiene.
Recommended for:
- patients with stomach complaints;
- gastritis/ulcer patients.
Biomaterial: Venous blood
- Draw blood fasting (8-12 hours without food)
- Water is permitted
- Exclude fatty food and alcohol 24 hours before
- No smoking 30 minutes before
Medications: If taking antibiotics, bismuth preparations, proton pump inhibitors, hormonal drugs, or immunosuppressants — inform physician
- Gastritis/ulcer symptoms;
- chronic stomach pain;
- GI examination by physician prescription.
Negative IgG — contact unlikely.
Positive IgG — infection was or is present.
At positive result: gastroenterologist consultation. Self-treatment not recommended.