Gardnerella Vaginalis: Symptoms, Risks, and Treatment

Gardnerella Vaginalis Test Name
  • DNA Probe/Multiplex Real Time PCR for Vaginitis
  • STD Screening Packages
Gardnerella Vaginalis Treatment Oral or intravaginal antibiotics
Price
  • DNA Probe/Multiplex Real Time PCR for Vaginitis: $147.15 NETT
  • STD Screening Packages: From $268 NETT
  • Treatment: From $0.87 to $59.95 per tab NETT
Appointment Options Same-day appointment (subject to availability).
Book via WhatsApp: 8893 3757 or email: hello@healthscreening.sg
Clinic Locations Orchard: 1 Orchard Blvd #05-09 Camden Medical Centre, S248649
Tanjong Pagar: 72 Anson Rd #01-02 Anson House, S079911
Disclaimer: This content is for general informational purposes only and should not be used as a substitute for professional medical guidance. Always consult a qualified healthcare provider for the diagnosis and treatment of Gardnerella vaginalis or sexually transmitted infections (STIs).

What Is Gardnerella Vaginalis?

Microscopic view of Gardnerella vaginalis bacteria that can cause bacterial vaginosis in women

Gardnerella vaginalis is a type of bacteria naturally present in the vaginal ecosystem, but when it multiplies excessively, it can lead to a condition known as bacterial vaginosis (BV).

This imbalance occurs when the beneficial lactobacilli that maintain vaginal acidity and protect against infection are reduced. Once this balance shifts, the vaginal environment becomes less acidic, allowing Gardnerella and other bacteria to thrive.

BV itself is not strictly a sexually transmitted infection (STI), yet it is more commonly observed among sexually active women. If left unaddressed, recurrent episodes can sometimes contribute to complications involving pregnancy or reproductive health.

What Can Cause Gardnerella Vaginalis Overgrowth?

An increase in Gardnerella vaginalis usually occurs when the natural bacterial harmony of the vagina is disrupted. A variety of internal and external influences can cause this shift, including:

Although it is not categorised as a classic STI, the condition appears more frequently in individuals whose vaginal microbiota changes due to sexual exposure. It can also arise in those who are not currently sexually active, as the underlying cause relates to microbial imbalance rather than transmission alone.

What Are Symptoms of Gardnerella Vaginalis?

When Gardnerella vaginalis becomes dominant in the vaginal flora, bacterial vaginosis may develop, producing characteristic symptoms that are often distinct but not always noticeable.

Woman sitting on bed holding lower abdomen showing symptoms of Gardnerella vaginalis infection

Common symptoms include:

  • A noticeable fish-like odour, especially after intercourse
  • A thin, greyish or whitish discharge
  • Vaginal irritation, itching, or mild burning sensations
  • A stinging feeling when urinating

In some women, BV may cause no obvious symptoms, especially in the early stages. Routine check-ups or screening are useful when changes in discharge or odour are noticed, even if discomfort is minimal.

What Are the Risks of Untreated Gardnerella Vaginalis?

Untreated bacterial vaginosis related to Gardnerella vaginalis can lead to several reproductive and systemic complications.

Possible risks include:

How Is Gardnerella Vaginalis Diagnosed?

Diagnosing Gardnerella vaginalis focuses on identifying bacterial vaginosis and confirming that the bacteria present in large numbers. A vaginal swab is typically taken to assess bacterial composition.

Gloved hand holding medical swab used for Gardnerella vaginalis testing and diagnosis

Laboratory tests commonly include:

  • Microscopic evaluation – Detects "clue cells," vaginal epithelial cells coated with bacteria.
  • pH measurement – A reading above 4.5 often indicates reduced vaginal acidity.
  • Whiff test – Adding a potassium hydroxide solution may produce a distinctive fishy odour, supporting a BV diagnosis.
  • Nucleic acid amplification tests (NAATs) – Sensitive molecular tests that identify bacterial DNA and confirm the specific organisms involved.

How Is Gardnerella Vaginalis Infection Treated?

Treating Gardnerella vaginalis aims to re-establish the healthy bacterial balance of the vagina and eliminate overgrowth.

Antibiotic therapy remains the standard approach, most often using metronidazole or clindamycin, which can be taken orally or applied intravaginally depending on clinical assessment.

For recurrent or persistent cases, probiotics may help support the regrowth of beneficial bacteria and reduce recurrence rates. Reviewing hygiene habits, sexual practices, and medication use can also help identify triggers and lower future risk. Follow-up visits are also recommended if symptoms persist or reappear after treatment completion.

Cost of Gardnerella Vaginalis Testing & Treatment

Testing and treatment for bacterial vaginosis linked to Gardnerella vaginalis are available at Singapore Women's Clinic, with the prices as follows:

Test / Treatment Price*
Consultation From $49.05
DNA Probe/Multiplex Real Time PCR for Vaginitis – Swab

Gardnerella vaginalis, Candida albicans and Trichomonas vaginalis**
$147.15
STD Screening Packages
Basic Female Genital Screen (5 tests) – Swab

Chlamydia PCR, Gonorrhoea PCR, Candida, Gardnerella Vaginosis, Trichomonas
$268
Enhanced Female Genital Screen (9 tests) – Swab

Chlamydia, Gonorrhoea, Mycoplasma genitalium, Mycoplasma hominis, Trichomonas, Ureaplasma parvum, Ureaplasma urealyticum, Candida, Gardnerella Vaginosis
$348
Complete Female STD Screen (15 tests) – Blood Test + Swab

HIV, Syphilis, Hepatitis B, Hepatitis C, Herpes Simplex Virus 1 and 2, Chlamydia, Gonorrhoea, Mycoplasma genitalium, Mycoplasma hominis, Trichomonas, Ureaplasma parvum, Ureaplasma urealyticum, Candida, Gardnerella Vaginosis
$478
Treatment
Oral Antibiotics From $0.87 per tab
Intravaginal Antibiotics $59.95 per box

*Prices are NETT and inclusive of GST.

We also offer a wide range of STD testing options and women's health services. Female doctors are available upon request for added comfort and privacy during consultations.

For appointment scheduling or further details, please contact our clinic directly.

How Can Gardnerella Vaginalis Infection Be Prevented?

Preserving a balanced vaginal microbiome is key to preventing Gardnerella overgrowth. Practical steps include:

Simple lifestyle measures combined with timely screening can help maintain vaginal health and reduce the likelihood of recurrence.

Where Can I Test for Gardnerella Vaginalis?

ATA Medical Orchard Clinic

Orchard Clinic

Central location in Orchard, easily accessible by public transport.

1 Orchard Blvd, #05-09 Camden Medical Centre, Singapore 248649

Nearest MRT: Orchard Boulevard Station (TE13)

ATA Medical Tanjong Pagar

Tanjong Pagar Clinic

Serving professionals in the CBD with fast, confidential women's health services.

72 Anson Rd, #01-02 Anson House, Singapore 079911

Nearest MRT: Tanjong Pagar Station (EW15)

Why Choose Our Sexual Health Services?

Discreet, reliable, and professional — here's what makes our care stand out.

Same-Day STD Testing Available

We offer same-day appointments for STD screening, with female doctors available.

Discreet & MOH-Registered

As a licensed medical clinic, we provide confidential care in a safe and respectful environment.

Experienced & Non-Judgemental Team

Our doctors and nurses provide professional support in a respectful, judgement-free setting.

How Do I Book an Appointment for a Gardnerella Vaginalis Test?

Female patient consulting Dr Jana Lim at ATA Medical clinic for confidential sexual health care
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