Hepatitis Blood Test in Kathmandu — B & C Serology The Serological Detection — HBsAg, Anti-HCV & the Two-Step Confirmation
Hepatitis B and C blood testing at Thamel Clinic — serology that detects chronic-carriage infections, two-step HCV confirmation, and interpreted results.
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Reviewed by: STD Specialist (MBBS, MD - Medicine)
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Last medical review: June 1, 2026
This content follows evidence-based medical guidelines and is regularly updated to reflect current medical practices.
Hepatitis Blood Tests in Kathmandu
- HBsAg for HBV — surface antigen detects current infection.
- HCV needs two-step — anti-HCV then RNA for active-vs-cleared.
- Chronic carriage silent — decades before damage shows.
- HCV curable — ~8–12 week DAA, SVR12 = cure.
Hepatitis Blood Testing — What the Serology Detects
Hepatitis B and C are detected by blood serology — antibody and antigen markers for viruses that produce decades of silent chronic carriage ending in cirrhosis and liver cancer. The testing is detection method because infections are asymptomatic until damage is advanced.
Hepatitis B: surface antigen (HBsAg) detects current infection — fuller panel (surface antibody, core antibody) distinguishes resolved infection vs vaccination vs active carriage. Hepatitis C: antibody (anti-HCV) detects exposure — but ~25–30% clear spontaneously, so a positive anti-HCV needs the RNA test to distinguish past-resolved from currently-active.
The honest framing: blood test is simple — interpretation is where clinical value lives — a positive anti-HCV is not automatically active HCV, a positive HBsAg is a chronic-carrier picture needing staging, and a negative inside window needs retest guidance.
Hepatitis B — the HBsAg & the Panel
The screening marker is HBsAg (hepatitis B surface antigen) — a positive indicates current infection. The fuller panel distinguishes pictures: surface antibody (immunity — from vaccination or resolved infection), core antibody (past or current infection marker), e-antigen (replication activity) — components that stage disease.
A positive HBsAg is chronic carriage — staged by viral load, ALT and e-antigen — with management by monitoring or antiviral suppression where stage warrants. HBV is managed, not cured, in most cases — suppression controls it.
HBsAg
Current HBV infection — screening marker.
Panel Distinguishes
Resolved, vaccinated, active carrier — fuller picture.
Chronic Carriage Staged
Viral load, ALT, e-antigen — stage determined.
Managed Not Cured
Suppression controls it — a chronic infection.
Hepatitis C — the Two-Step
The screening is anti-HCV antibody — detecting exposure — but antibody stays positive even after spontaneous clearance (~25–30% clear without treatment), so a positive anti-HCV needs HCV RNA to distinguish past-resolved from currently-active.
The value of two-step: hepatitis C is now curable — ~8–12 week direct-acting antiviral regimens produce SVR12 (sustained response = cure) in ~95%+ — so a confirmed active infection goes to a curative pathway, not chronic management.
Anti-HCV
The exposure antibody — screening.
RNA Distinguishes
Positive antibody → RNA for active-vs-cleared.
~25–30% Self-Clear
A positive antibody is not automatically active.
HCV Curable
~8–12 week DAA → SVR12 = cure in ~95%+.
The Interpretation
A negative is read against timing — hepatitis windows are weeks to months; a too-early test needs retest scheduled. A positive HBsAg is staged for chronic-carriage picture; a positive anti-HCV gets the RNA for active-vs-cleared.
The interpretation includes what result means and what follows — a carrier gets monitoring; an active HCV gets curative pathway; a negative at right time is reassurance.
Timing-Aware Negative
Weeks-to-months window — read against it.
HBsAg Staged
The carriage picture assessed.
HCV RNA Resolves
Active vs cleared — second step.
Pathway Included
Monitoring for carriers; cure for active HCV.
Why the Screen Matters
The infections are silent for decades — asymptomatic carriage while producing cirrhosis and hepatocellular carcinoma that are expensive, often-untreatable outcomes. The blood screen catches them while intervention still works.
The transmission routes overlap with sexual health — blood and sexual contact — so the STI history prompts hepatitis screen alongside, and two are usually combined in appropriate panel.
Silent for Decades
Asymptomatic carriage until damage.
Preventing Cirrhosis/Cancer
The severe outcomes cheap screen prevents.
Overlapping Routes
Blood and sexual — the STI history prompts it.
Curable/Manageable
HCV cured; HBV managed — screen finds what is treatable.
Hepatitis Testing & Costs
| Service | What It Includes | Cost (NPR) |
|---|---|---|
| Consultation | Exposure and indication assessment | Rs. 450 |
| HBV serology | HBsAg ± fuller panel | Lab rate |
| HCV testing | Anti-HCV ± RNA where positive | Lab rate |
| Treatment pathway | HBV management or HCV cure | Per case |
Transparent pricing; confirm when booking.
Why Thamel Clinic for Hepatitis Testing
- Two-step done correctly — HCV antibody → RNA for active-vs-cleared.
- Curable-pathway aware — HCV to the ~8–12 week cure, not just monitoring.
- Staged correctly — HBV carriage staged for management.
- Window-honest — timing stated; too-early flagged.
- Confidential — private testing and results.
Frequently Asked Questions
What does a hepatitis blood test check?
HBsAg for HBV current infection; anti-HCV for HCV exposure (RNA distinguishes active from cleared).
Is a positive anti-HCV active hepatitis C?
Not necessarily — ~25–30% clear spontaneously; the RNA distinguishes past from active.
Is hepatitis C curable?
Yes — ~8–12 week DAA regimens, ~95%+ cure (SVR12).
Is hepatitis B curable?
Managed — suppression controls it; chronic carriage is monitored or treated by stage.
When can I test after exposure?
Weeks to months — timing is stated at consultation.
Is it confidential?
Yes — private testing and results.
Still have questions? Contact us or book an appointment for personalized guidance.
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Last Updated: October 19, 2026 |Clinic: Thamel Clinic |Licensed: Registered