MSM1 STI
Multi-site STI screening combining HIV and syphilis blood tests with chlamydia and gonorrhoea testing from urine, throat and rectal samples.
Turnaround time
2 business days
Biomarkers count
8
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Overview of the MSM1 STI Test
The MSM1 STI is a comprehensive multi-site sexual health profile combining blood, urine, throat and rectal testing.
The profile screens for HIV and syphilis using blood samples and tests for Chlamydia trachomatis and Neisseria gonorrhoeae at three anatomical sites: urine, throat and rectum.
Testing more than one anatomical site can be important because chlamydia or gonorrhoea may be present at the throat or rectum even when a urine sample is negative.
The MSM1 profile therefore provides broader site-specific screening than a blood-only or urine-only STI test.
It is particularly designed for men who have sex with men and other people whose sexual exposure makes multi-site screening appropriate.
The profile requires a blood sample, first-catch urine, a throat swab and a rectal swab.
Because throat and rectal swabs form part of this profile, the complete MSM1 STI is provided through an appropriate clinic collection pathway, with both swabs collected on site by a healthcare professional. The MSM1 STI costs £280.
What Does the MSM1 STI Test Check?
The MSM1 STI screens for four important sexually transmitted infections across blood, urine, throat and rectal sites. This test includes 8 site-specific testing components.
HIV 1 & 2/p24 Ag
Combined HIV blood screening that detects antibodies to HIV-1 and HIV-2 together with p24 antigen.
Syphilis IgG/IgM
Detects antibodies associated with infection by Treponema pallidum, the bacterium that causes syphilis.
Chlamydia trachomatis - Urine
Tests a first-catch urine sample for Chlamydia trachomatis.
Chlamydia trachomatis - Throat
Tests a throat swab for pharyngeal Chlamydia trachomatis.
Chlamydia trachomatis - Rectal
Tests a rectal swab for rectal Chlamydia trachomatis.
Neisseria gonorrhoeae - Urine
Tests a first-catch urine sample for Neisseria gonorrhoeae.
Neisseria gonorrhoeae - Throat
Tests a throat swab for pharyngeal gonorrhoea.
Neisseria gonorrhoeae - Rectal
Tests a rectal swab for rectal gonorrhoea.
Who May Benefit From the MSM1 STI Test?
The MSM1 STI may be useful for people who need broader sexual health screening across several anatomical sites rather than relying on a single urine or blood sample.
Men who have sex with men seeking multi-site STI screening - The profile combines blood-borne infection screening with urine, throat and rectal testing.
People who have had oral sexual exposure - Throat testing can identify infections that would not necessarily be detected from urine.
People who have had receptive anal sexual exposure - Rectal testing can identify site-specific chlamydia or gonorrhoea.
People with a new sexual partner - Screening may be considered following relevant new sexual exposure.
People without STI symptoms - Some sexually transmitted infections can be present without noticeable symptoms.
People with a previous STI - Repeat screening may be appropriate following subsequent exposure.
People wanting HIV and syphilis screening alongside chlamydia and gonorrhoea testing - MSM1 combines serology with multi-site testing.
How to Prepare
Recent antibiotic treatment may affect some infection results.
Do not delay urgent clinical assessment if you have severe symptoms, significant pelvic or testicular pain, fever or another acute concern.
Symptoms and Reasons to Consider the MSM1 STI Test
STIs can be asymptomatic, but testing may also be appropriate when symptoms develop following a relevant sexual exposure.
Pain or burning when passing urine - Can occur with urethral sexually transmitted infection.
Unusual genital discharge - May warrant testing for chlamydia or gonorrhoea.
Rectal discomfort, discharge or bleeding - Rectal STI testing may be relevant following receptive anal exposure.
Persistent sore throat following relevant sexual exposure - Pharyngeal infection can sometimes occur without typical genital symptoms.
A genital ulcer, rash or other symptoms suggestive of syphilis - Syphilis requires appropriate serological and clinical assessment.
A known sexual contact with an STI - Site-specific testing may be appropriate according to the exposure.
No symptoms but concern following sexual exposure - Absence of symptoms does not exclude infection.
The timing of testing after an exposure matters because different infections become detectable at different stages.
If exposure was very recent, additional or repeat testing may be appropriate even when an initial result is negative.
How to Book Your MSM1 STI Test
The MSM1 STI requires several different specimen types, so the complete profile is arranged through an appropriate clinic collection appointment.
Choose the MSM1 STI
Select the multi-site MSM1 sexual health profile (test price £280).
Select your sample collection option
Book required in-clinic multi-site specimen collection (+£35 clinic collection fee).
Attend your appointment
Blood, first-catch urine, throat and rectal samples are collected or provided as required.
Laboratory analysis
Blood is analysed for HIV and syphilis while the urine and swabs are tested for Chlamydia trachomatis and Neisseria gonorrhoeae.
Receive your results securely
Your completed sexual health results are returned confidentially after laboratory analysis.
When Will I Receive My Results?
Results are generally expected within approximately 2 days.
Turnaround begins once the required specimens have been received and entered into laboratory processing.
Reactive results or additional confirmatory testing can occasionally take longer to resolve fully.
Understanding Your Results
Each anatomical site is assessed separately.
A negative urine result does not necessarily determine what is happening at the throat or rectum, which is why the MSM1 profile includes multiple specimens.
A reactive HIV or syphilis screening result may require further confirmatory testing before a final diagnosis is made.
A positive chlamydia or gonorrhoea result should receive appropriate clinical review so treatment, follow-up and partner notification can be arranged where necessary.
A negative profile is reassuring for the infections and sites tested but does not test for every sexually transmitted infection.
Why Book With London Blood Tests?
London Blood Tests provides discreet multi-site STI screening combining serology and site-specific infection testing.
Multi-site chlamydia and gonorrhoea testing - Urine, throat and rectal sites are assessed rather than urine alone.
HIV testing included - HIV 1 & 2/p24 antigen screening forms part of the blood profile.
Syphilis testing included - Syphilis IgG/IgM is included.
Four specimen types combined - Blood, first-catch urine, throat and rectal specimens provide broader coverage.
Private clinic collection - Samples are handled discreetly by trained healthcare professionals.
Fast laboratory turnaround - Results are generally expected within approximately 2 days.
Confidential results - Laboratory reports are returned securely.
Private MSM1 STI Test in London
London Blood Tests provides private MSM1 STI screening in London for people requiring broader multi-site sexual health testing.
The profile combines HIV and syphilis blood tests with chlamydia and gonorrhoea testing from urine, throat and rectal specimens.
The complete test is clinic collection only because throat and rectal swabs are required.
Results are generally expected approximately 2 days after laboratory receipt.