Chlamydia

Chlamydia (caused by Chlamydia trachomatis) is one of the most common bacterial STIs—and often has no symptoms. Untreated infection can lead to pelvic inflammatory disease (PID)infertilityectopic pregnancy, and chronic pelvic pain. In men, it may cause epididymitis and, rarely, reactive arthritis.

Lab testing uses NAATs (nucleic acid amplification tests) to detect the bacteria’s genetic material from urinevaginal/cervicalurethralthroat, or rectal samples—matched to where exposure occurred. Testing supports screeningdiagnosis, and follow-up after treatment. Results guide next steps with your clinician, but do not replace medical care or emergency services.

Signs, Symptoms & Related Situations

  • Often no symptoms (screening still recommended in many groups)

  • Genital/urinary: burning with urination, penile or vaginal discharge, bleeding after sex, intermenstrual bleeding, pelvic/testicular pain

  • Rectal: pain, bleeding, discharge, tenesmus (with receptive anal exposure)

  • Throat: sore throat or none at all (with receptive oral exposure)

  • Fertility & pregnancy: prior PID, infertility workup, pregnancy or planning pregnancy

  • When to test: new or multiple partners, condom break, partner positive, routine annual screening if recommended

  • Seek urgent care now: severe pelvic pain with fever, sudden severe testicular pain, severe lower-abdominal pain, or symptoms of sepsis

Symptoms and risks should be reviewed by a qualified clinician.

Why These Tests Matter

What testing can do

  • Detect silent infection with highly sensitive NAAT methods

  • Match the sample to exposure site (urine/genital, throat, rectal) for best accuracy

  • Guide timely follow-up—including retesting to check for reinfection after treatment

What testing cannot do

  • Replace a clinician’s exam, treatment, or partner management

  • Diagnose every cause of symptoms without site-appropriate sampling

  • Guarantee detection immediately after exposure (there is a window period)

What These Tests Measure (at a glance)

  • Chlamydia trachomatis NAAT (urine or genital swab): first-catch urine, self-collected vaginal swab, clinician-collected endocervical or urethral swab

  • Extragenital NAATs (as indicated): throat and/or rectal swabs if those sites were exposed

  • Combined panels: chlamydia + gonorrhea NAAT from the same specimen to streamline screening

  • Reflex/confirm algorithms: some labs auto-confirm positives or reflex to additional testing per protocol

Window period: NAATs can detect infection about 1 week after exposure for many people, and by 2 weeksmost infections are detectable. If you test very early, your clinician may advise retesting.

Quick Build Guide

Goal / Scenario Start with Add if needed
Routine screen (no symptoms) Chlamydia/Gonorrhea NAAT (urine or vaginal swab) Throat/rectal NAAT if oral/anal exposure
Symptoms (burning, discharge, pain) Site-matched chlamydia/gonorrhea NAAT Trichomonas NAAT • Urinalysis/urine culture(clinician-directed)
After a recent exposure Chlamydia/Gonorrhea NAAT now Repeat NAAT in ~2 weeks if early; broader STI screen
Pregnancy Chlamydia/Gonorrhea NAAT (vaginal/cervical or urine) Test of cure ~4 weeks post-treatment and retest at ~3 months
Men who have sex with men (MSM) Urine/genital NAAT Throat and rectal NAAT (site-based screening)
Partner tested positive Chlamydia NAAT Expanded STI panel (HIV, syphilis, hepatitis) per clinician

How the Testing Process Works

  1. Choose the right sites: order urine or genital NAAT and add throat/rectal NAAT to match exposure.

  2. Prepare correctly: do not urinate for at least 1 hour before a urine NAAT; avoid douching before a vaginal swab; follow your kit or collection instructions.

  3. Provide samples: a standard urine sample and/or swabs; blood is not used for chlamydia NAAT.

  4. Get secure results: most post within a few days.

  5. Plan next steps: your clinician handles treatment, partner notification, and timing for retesting.

Interpreting Results (General Guidance)

  • Positive NAAT: indicates infection at that site—seek clinician treatment; partners usually need evaluation.

  • Negative NAAT but very recent exposure: could be too early—retest at the window your clinician recommends.

  • Persistent symptoms after treatment: may need test of cure or evaluation for another cause (e.g., gonorrhea, trichomonas, UTI).

  • Pregnancy: test of cure ~4 weeks after therapy and retest at ~3 months are commonly advised.
    Always interpret results with a qualified healthcare professional; site tested, timing, and exposure history matter.

Choosing Panels vs. Individual Tests

  • Core screen: Chlamydia/Gonorrhea NAAT from urine or vaginal/cervical swab

  • Site-expanded screen: add throat and/or rectal NAAT when exposed at those sites

  • Broader STI panel (as indicated): add HIV 4th-generationsyphilis, and hepatitis B/C tests
    Use bundled panels for efficient screening; add site-specific tests to answer targeted questions.

FAQs

Do I need to fast?
No. Chlamydia NAATs don’t require fasting.

Can a urine test detect throat or rectal chlamydia?
No. You need throat or rectal NAATs for those sites.

How soon after sex can I test?
Many infections are detectable by 1 week2 weeks is more reliable. If you test earlier, plan a retest.

I have no symptoms—should I still be screened?
Yes, many infections are asymptomatic. Screening is recommended for certain groups and risk factors.

What is a “test of cure”?
A repeat test to confirm clearance. It’s routinely recommended in pregnancy and sometimes if symptoms persist.

Why retest 3 months after treatment?
Reinfection is common. A 3-month retest helps catch new infections.

Are results private?
Yes. Results are delivered securely. Positive results typically require clinician follow-up and may involve public health reporting.

Related Categories & Key Tests

  • STD Tests Hub

  • All STD Tests • Gonorrhea Tests • Trichomonas Tests • HIV Tests • Syphilis Tests • Hepatitis Screening Tests • Reproductive Health Tests

  • Key Tests: Chlamydia NAAT (urine/vaginal/cervical/urethral) • Chlamydia NAAT (throat) • Chlamydia NAAT (rectal) • Combined Chlamydia/Gonorrhea NAAT • Trichomonas NAAT • HIV-1/2 4th-Generation Ag/Ab • Syphilis (RPR with treponemal confirm) • Hepatitis B Surface Antigen • Hepatitis C Antibody

References

  • Centers for Disease Control and Prevention — Sexually Transmitted Infections Screening and Management.
  • U.S. Preventive Services Task Force — Chlamydia and Gonorrhea Screening Recommendations.
  • World Health Organization — Chlamydia trachomatis fact sheets and testing guidance.
  • American College of Obstetricians and Gynecologists — STI screening in women and pregnancy.
  • Infectious Diseases Society of America — Diagnostic testing for STIs and NAAT best practices.
  • Clinical reviews on extragenital NAAT performance and retesting after treatment.

Available Tests & Panels

Your Chlamydia Tests menu is pre-populated in the Ulta Lab Tests system. Start with a chlamydia/gonorrhea NAATfrom urine or vaginal/cervical swab, then add throat and/or rectal NAATs to match exposure. Use filters to include expanded STI screening when appropriate. Follow collection instructions carefully and review results with your clinician to plan treatment, partner notification, and retesting.

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Name Matches

The Chlamydia/Neisseria gonorrhoeae RNA, TMA Urine Test screens for both chlamydia and gonorrhea infections by detecting RNA from these bacteria. Using advanced molecular technology, it offers high accuracy for diagnosing active infections. Doctors order this urine-based test to confirm infection, support early treatment, and protect sexual partners. It is an essential tool for sexual health screening, helping reduce long-term health risks and control STD spread.

Varied
Phlebotomist
Also Known As: Gonorrhea and Chlamydia Test

Most Popular

The Chlamydia trachomatis RNA TMA Urine Test detects genetic material of C. trachomatis using transcription-mediated amplification (TMA), a highly sensitive method for diagnosing infection. Doctors order this noninvasive urine test for patients with symptoms like discharge, pain, or burning urination, or for routine STD screening. Results help confirm infection, guide treatment, and prevent complications such as infertility, pelvic inflammatory disease, or transmission.

Varied
Phlebotomist
Also Known As: Chlamydia Trachomatis Test, Chlamydia STD Test, Chlamydia Urine Test

Blood
Blood Draw

The Chlamydia trachomatis IgM Antibody Test detects IgM antibodies produced during early immune response to C. trachomatis infection. IgM positivity can indicate recent or acute infection, making it useful for identifying new exposure. This test provides valuable diagnostic information for evaluating sexually transmitted infections, guiding management, and supporting early detection of reproductive or urogenital health risks.

Blood
Blood Draw

Blood
Blood Draw

 The STD Urinary Tract Infection Panel is a targeted diagnostic tool designed to identify sexually transmitted infections (STIs) such as Chlamydia and Gonorrhea, alongside assessing overall urinary tract health through a Urinalysis Complete test. This panel facilitates the early detection of common STIs and urinary tract infections (UTIs), allowing for timely treatment and management.
Urine, Varied
Phlebotomist, Urine Collection

In 2018, more than four million people in the US were diagnosed with chlamydia, but many cases are not reported because many people never show symptoms. And this is the main reason why chlamydia testing is so important. 

Chlamydia tests can show what your lack of symptoms doesn't. If you think you may be at risk of having chlamydia, then it's time to take action. 

Maintaining your sexual health and wellness is imperative for both you and your partner's overall health. Chlamydia testing is your first step. 

Keep reading this guide to find out everything you need to know about chlamydia and chlamydia testing. 

What is Chlamydia?

Chlamydia trachomatis is the most common sexually transmitted disease in America and especially common in young adults.

Chlamydia often affects young women, but it also occurs in men and people of all age groups. Chlamydia can easily be treated with antibiotics but, left untreated, can lead to serious health complications in the future.

Risk factors for Chlamydia

Certain lifestyle habits and age groups put you at a higher risk of getting chlamydia. Chlamydia risk factors include:

  • Being sexually active before the age of 25
  • Having multiple sex partners
  • Having unprotected vaginal, anal, or oral sex
  • Having a history of other sexually transmitted diseases.

What Causes Chlamydia?

Chlamydia is caused by the trachomatis bacterium and usually spread through oral, anal, and vaginal sex.

If you're pregnant, you can also spread chlamydia to your newborn during delivery. In infants, chlamydia can cause serious eye infections and pneumonia.

Signs and Symptoms of Chlamydia

Chlamydia is often known as a silent infection because many times, infected people are completely asymptomatic. Also, in the early stages, chlamydia often causes few to no symptoms. When chlamydia does cause symptoms, they're so mild, and it's all too easy to dismiss them as something else.

Symptoms of chlamydia include:

  • Painful urination
  • Vaginal discharge
  • Discharge from the penis
  • Pain during sex for women
  • Bleeding between menstrual periods
  • Testicular pain

You can also get chlamydia in your rectum and may experience rectal pain, bleeding, or discharge. In addition, chlamydia can cause eye infections if your eyes come into contact with infected bodily fluids.

Complications of Chlamydia

Untreated chlamydia puts you at risk for many complications.

When you have chlamydia, you're at more risk of developing pelvic inflammatory disease (PID), which is an infection in your uterus and fallopian tubes.

PID can cause pelvic pain, fever, and severe infections that may require hospitalization. PID can cause damage to your fallopian tubes, ovaries, uterus, and cervix.

Chlamydia in men can cause an infection near the testicles called epididymitis—this type of infection results in a fever along with scrotal swelling and pain.

Prostate gland infections can also occur. Sometimes chlamydia spreads to the prostate gland and causes fever, chills, low back pain, and painful urination.

Chlamydia infections can also cause infertility and infections in newborns. Chlamydia also causes ectopic pregnancies. This type of pregnancy occurs when the egg grows outside of the uterus, usually in your fallopian tube. If your fallopian tubes burst, it can cause life-threatening complications.

What Tests Are Done to Diagnose Chlamydia

If you think you may have chlamydia, then you should make an appointment to see your doctor. Your doctor will ask you things like:

  • When did your symptoms begin?
  • Does anything make them worse?
  • Is there anything that relieves your symptoms?
  • What medications do you take daily?

Your doctor will also need to know details about your sex life. You'll be asked how many sexual partners you have or if you have a new sexual partner, as well as if you use condoms consistently.

Testing for chlamydia is pretty easy and usually includes a urine test and, and for women a swab of your cervix. Your doctor will insert a swab into the end of your penis to take a sample for men.

Lab Tests For Chlamydia

There are different lab tests available for chlamydia your doctor will order, depending on your symptoms.

One of the most common tests is the Chlamydia Urine Test. This test will detect the chlamydia trachomatis bacteria. Before taking this test, you shouldn't urinate at least one hour before collecting your urine.

Often, your doctor will order a combined Chlamydia and Gonorrhea Urine Test as the two have similar symptoms. This test works the same way by detecting either the chlamydia trachomatis bacteria or the Neisseria gonorrhoeae bacteria that causes gonorrhea.

Depending on your medical history and current medical conditions, your doctor may order a Chlamydia/Chlamydophila Ab Pnl 3 (IgG, IgA, IgM) antibody test to detect the species of chlamydia that can cause pneumonia.

Chlamydia can also cause other infections in the eye, urinary tract, and respiratory tract. Your doctor also may order a Chlamydia Trachomatis Antibody (IgM) if you're at risk.

More lab testing for STDs includes a Basic STD Panel, which tests for chlamydia, gonorrhea, and herpes. You can also get a Comprehensive STD Panel that tests syphilis, herpes, gonorrhea, hepatitis, and chlamydia.

FAQs About Chlamydia

Frequently asked questions about chlamydia usually start with how it's spread. You can get chlamydia by having any sexual contact where you exchange body fluids with someone that has chlamydia.

Wondering how you can reduce your risk of getting chlamydia? If you're sexually active, you can greatly reduce your risk by:

  • Being in a monogamous relationship, and you both get tested   
  • Using latex condoms correctly each time you have sex

Are you pregnant and wondering how chlamydia can affect your baby? Chlamydia can pass to your baby from your vaginal secretions during delivery. This can cause lung or eye infections. If you have chlamydia, you're also more likely to deliver your baby early.

Chlamydia Testing at Ulta Lab Tests

Ulta Lab Tests offers highly accurate and reliable tests which allow you to make informed decisions about your health. Ulta Lab Tests gives you:

  • Secure and confidential results
  • No need for health insurance
  • No need for a physician's referral
  • Affordable pricing
  • A 100 percent satisfaction guarantee

If you order your Chlamydia testing today, your results will be provided to you within 24 to 48 hours in most cases.

Take control of your health and with Ulta Lab Tests.