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Knowing the difference between these two tests helps you know what to expect when your doctor recommends one of them.
What Is a Low Vaginal Swab?
In the low vaginal swab (LVS) test, the sample is collected from the lower part of the vagina (usually near the vaginal opening).It is commonly used to:
- Assess mild vaginal irritation or itching
- Investigate unusual discharge
- Screen for common vaginal infections
- Evaluate vaginal health during pregnancy, when indicated
What Is High Vaginal Swab Testing?
In a high vaginal swab (HVS), the sample is collected from the upper part of the vagina (usually close to the cervix).Your doctor may recommend it if you have:
- Persistent or recurrent vaginal discharge
- An unpleasant vaginal odour
- Suspected bacterial vaginosis or a yeast infection
- Symptoms that continue despite treatment
Difference Between These Tests
The following are the key differences between these two similar-looking tests:| Point of Difference | LVS | HVS |
| Sample collected from | Lower vagina | Upper vagina, near the cervix |
| Speculum required | Usually no | Usually yes |
| Common reason | Mild irritation or screening | Persistent discharge or suspected infection |
| Helps detect | Screens for common vaginal infections | Helps identify bacteria, yeast, and other organisms causing infection |
| Duration | About 1–2 minutes | About 2–5 minutes |
Is a Low Vaginal Swab Needed If a High Vaginal Swab Is Done?
In some situations, both tests may be recommended for a clearer diagnosis.| Circumstance | Recommended test |
| Mild irritation around the vaginal opening | Low vaginal swab (LVS) |
| Persistent discharge or suspected internal infection | High vaginal swab (HVS) |
| Symptoms affecting different areas or an uncertain diagnosis | Both LVS and HVS may be recommended |
What To Expect During the Test?
Before the test- Avoid sexual intercourse for 24 hours, if possible.
- Do not use vaginal creams or medicines unless advised by your doctor.
- Tell your doctor if you are taking antibiotics or antifungal medicines.
- Fasting is not required.
| LVS | HVS |
| A sterile swab is gently rubbed inside the lower vagina. | A speculum is inserted before the sample is collected. |
| Usually causes little discomfort. | You may feel mild pressure for a few seconds. |
| Takes about 1–2 minutes. | May take a few minutes. |
How Does Vaginal Swab Testing Help in Maintaining Your Reproductive Health?
A vaginal swab test is not for fertility assessment. However, it can identify infections that may affect reproductive health if left untreated.These include:
- Bacterial vaginosis
- Vaginal yeast infections (Candida)
- Trichomoniasis (in some cases)
- Group B Streptococcus during pregnancy
- Other bacterial infections
Choosing the appropriate vaginal swab helps ensure an accurate diagnosis and timely management of infections that may affect your vaginal and reproductive health.
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FAQs on Low Vaginal Swab vs High Vaginal Swab: What's the Difference?
- Does a low or high vaginal swab hurt?
Most people experience little or no pain. A high vaginal swab may feel slightly more uncomfortable because it usually involves a speculum, but the procedure is quick. - Can I have a vaginal swab during pregnancy?
Yes. When medically indicated, both low and high vaginal swabs are generally safe during pregnancy and can help diagnose infections that may require treatment. - How long do vaginal swab results take?
Results are usually available within 2–7 days, depending on the type of test and the laboratory processing the sample.