HIV / STD
Point-of-care rapid testing for hiv / std. OEM/ODM manufacturer.
Overview
HIV and syphilis are bloodborne/sexually transmitted infections. Screening is standard in antenatal care, blood donation and key-population programs.
Clinical Context
HIV (retrovirus) and syphilis (Treponema pallidum) are bloodborne/sexually transmitted. Screening is standard in antenatal care, blood donation and key-population programs.
Diagnostic Markers & Methods
Antibody tests (HIV-1/2, treponemal syphilis) · HIV p24 antigen · combined HIV/syphilis devices.
Antigen vs Antibody
HIV p24 antigen appears earlier than antibodies (narrows the window); treponemal syphilis antibodies persist after treatment.
Diagnostic Workflow
Antibody/antigen screening → reactive results confirmed by serial tests (HIV) or non-treponemal RPR titer (syphilis) → linkage to care.
Testing Window
HIV antibody: ~3–6 weeks (window period). Syphilis treponemal antibody: ~2–6 weeks.
Interpretation
A reactive HIV/syphilis antibody result is presumptive and must be confirmed per national algorithms (HIV: serial tests; syphilis: non-treponemal RPR titer).
False Negative / Positive Considerations
False negative: window period before seroconversion. False positive: rare — always confirm per national algorithm.
Confirmatory Testing
HIV: serial/differentiation algorithm. Syphilis: non-treponemal RPR/VDRL titer for staging.
Testing Settings
Rapid tests serve antenatal clinics, blood banks and outreach; laboratory confirmation follows national algorithms.
Sources
WHO HIV testing services; CDC syphilis testing.
Progene's Take
Position: Treat every reactive HIV or syphilis rapid result as presumptive — your program is only as defensible as its confirmation pathway.
- Antibody tests have a window period and false-reactive risk; serial confirmation is non-negotiable.
- Combined HIV/syphilis devices reduce steps in antenatal and blood-bank screening.
- Document the national confirmation algorithm before you sell into a new market.
This is the buyer-advisor view of the technical team — editorial guidance, not a substitute for product IFU or local regulatory requirements.
Frequently Asked Questions
What is the window period for an HIV rapid test?
Antibody tests typically become reactive 3–6 weeks after exposure (window period). A negative result inside the window does not rule out infection — repeat or confirm by antigen/antibody or molecular testing.
Can a syphilis rapid test tell active from past infection?
No — treponemal antibody tests stay positive after treatment. Distinguish active from past infection with a non-treponemal (RPR) titer.
Why do HIV and syphilis get screened together?
Both are bloodborne/STIs with overlapping risk groups and are standard in antenatal and blood-donor screening; combined devices reduce cost and steps.
Related knowledge
Products (3)
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