STI (STD) Lab Test

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A STD (sexually transmitted disease) test is a lab test used to determine whether a person has a sexually transmitted infection (STI). STI testing can involve various methods, including blood tests, urine tests and swab tests, depending on the type of infection being tested for.

Select your STI test

* Results are available same day by 9 p.m. 99% of the time. On rare occasions, it may take up to 3 business days to receive results.

** Chlamydia, Gonorrhea and Trichomonas testing can be performed on urine samples as well as on throat (oral), anal (self-swab) and vaginal (self-swab) samples. The most common and recommended tests are urine and throat (oral) samples.

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About this test

What is
a STI (STD) Test

Sexually transmitted infections (STIs) are a collection of infections that can be transmitted via sexual activity or through blood. These infections can be caused by viruses, bacteria, or parasites, and can affect both males and females. Regular testing is crucial, particularly if you are sexually active, as many STIs can be asymptomatic or show no visible symptoms.

are STI (STD) Tests

STI testing is crucial in diagnosing specific sexually transmitted infections (STIs). These tests are either conducted as part of routine health screenings or when individuals exhibit signs and symptoms of a sexually transmitted disease (STD).

Who should undergo testing?

Many individuals infected with a STI may not show symptoms or experience only mild signs of infection. Without testing, these individuals can unknowingly spread the infection to others. Since STDs can lead to severe health complications, it is imperative to prioritize appropriate screening and diagnosis as a significant public health concern.

The primary objective of STI screening is to identify and treat infections in individuals before complications arise and prevent the further spread of disease. Moreover, screening aims to identify, test and treat the sexual partners of those diagnosed with STIs, effectively curbing the ongoing transmission of the infection.

STI (STD) test preparation recommendations

No special preparation or fasting is required for STD tests.

Before prescribing a test, there is a short questionnaire about your risk factors and any signs or symptoms of STIs to determine if we can prescribe the screening test. If you already have symptoms, or are pregnant or breastfeeding, you will need your own doctor to prescribe the test (i.e. Lilium will not be able to prescribe the test in these cases).

When interpreting STI test results, it’s important to remember that STIs have window periods – the time between when you are infected with an STI and when it shows up on a test. This period is usually around 4 weeks. If a STI test is taken too soon after infection, the results will not be accurate and the test will need to be repeated after the window period ends.

What happens if my test is positive?

One of our doctors or nurses will contact you to setup an appointment for a follow-up to a positive test. Most of the time this can be done over the telephone. You will receive instructions and a prescription to treat the infection (where applicable) at the follow-up appointment. Compared to other private labs and clinics, there are no additional charges for this follow-up appointment.

Frequently Asked Questions:


When will I get my STI test results?

Most samples are processed by the Lilium lab the same day, with results before 9 p.m. (often before 6 p.m.)


What are the different types of STI tests?

There are antibody tests and PCR tests for STIs. A third type, rapid antigen tests, are not as accurate as PCR tests and are not offered through Lilium.

Blood test for antibodies: This test detects the presence of antibodies against the STI pathogen in the blood. This can help determine if a person has been infected in the past. This includes STDs such as HIV, Hepatitis, Herpes and Syphilis.

RT-PCR test: This test can detect the presence of a bacterial, viral or parasitic infection in the urine or from a swab. This includes STI pathogens such as chlamydia, gonorrhea and trichomonas.


Who should get tested for STIs?

All sexually active individuals risk acquiring STIs. Screening primarily focuses on those at a higher risk of infection based on age, gender, health history, number of sexual partners, and sexual behaviour. Here is a quick overview of the commonly recommended STI screening guidelines:

For Adults and Adolescents: Individuals between the ages of 14 and 64 should get tested for HIV, Syphilis, chlamydia, gonorrhea and trichomonas at least once. The frequency of testing may vary depending on the level of risk.

For Sexually Active Women: All sexually active women under 25 should get tested for gonorrhea, chlamydia and trichomonas every year. This recommendation also applies to women aged 25 and older with an increased risk of STIs due to new or multiple sexual partners, or if their partner has been diagnosed with a STI.

For Pregnant Women: Pregnant women should undergo testing for syphilis, HIV, and hepatitis B during pregnancy. Those with additional risk factors should also get tested for chlamydia, gonorrhea and trichomonas.

For Sexually Active Gay and Bisexual Men: Men in this group should get tested annually for syphilis, chlamydia, gonorrhea and trichomonas. Those with multiple or anonymous partners may need more frequent testing every three to six months. Additionally, more frequent HIV testing may be beneficial for this group.

Individuals Engaging in Unsafe Sex:  Individuals who engage in unprotected sex, such as not using a condom, should undergo HIV, syphilis, chlamydia, gonorrhea and trichomonas testing at least once a year; Hepatitis testing is also recommended.

Injectable Drug Users: Individuals who share injection drug equipment should undergo HIV and Hepatitis testing at least once a year.

It is essential to prioritize regular STI testing to ensure early detection, timely treatment, and effective prevention of further transmission.


What happens during a STI test?

For PCR tests, either a vaginal swab (that can be self-collected in a private room) or a urine sample is collected and sent to the lab for analysis. Throat and anal swabs can be collected to detect any infections in those areas.

For antibody tests, a small amount of blood is collected from a vein by a professional nurse and sent to the lab for analysis.


How accurate are STI tests?

STI tests are generally more than 90% accurate. The level of detection sensitivity depends on how much of the antibody, virus, bacteria or parasite is present in the sample. If a test is taken too early after infection, the levels may be too low to detect, giving a negative result. For this reason it is advisable to do regular testing for STIs.


What happens if my results come back positive?

One of our doctors or nurses will contact you to setup an appointment for a follow-up to a positive test. Most of the time this can be done over the telephone. You will receive instructions and a prescription to treat the infection (where applicable) at the follow-up appointment. Compared to other private labs and clinics, there are no additional charges for this follow-up appointment at Lilium.

In case of positive results, it is imperative to commence treatment (where applicable) as soon as possible to minimize the risk of health complications. Our healthcare provider can also assist in devising a strategy for informing sexual partners who may be infected and suggest retesting after completion of treatment.

STI Testing

No prescription needed (prescribed by Lilium). As with all our tests, we provide an insurance receipt for potential reimbursement by your private insurance provider.

Why choose LILIUM?

Best Prices

Our fully automated private laboratory with cutting edge technology is able to reduce costs while increasing consistency and reproducibility of results.

Faster Service

We have designed our clinics and testing processes to be efficient, reducing wait times and time for results.

More Precise Information

Our test reports provide more precise information on test results, making it easier to monitor any changes in your health over time.

Free Parking

All our clinics provide free and available parking, helping you to save even more money and time.

Customer Support

Our online booking portal and helpful testing center staff help to make diagnostic testing more convenient and compassionate.

What our customers say about us


If you have any questions, you can email us at anytime or call us at (514) 341-8908 during our opening hours.

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