The Vaginitis Panel (PCR Test) is an advanced molecular diagnostic test designed to detect and differentiate the three most common causes of vaginitis:
- Bacterial Vaginosis (BV)
- Vulvovaginal Candidiasis (Yeast Infection)
- Trichomoniasis (Trichomonas vaginalis – STI)
This test uses polymerase chain reaction (PCR) technology to identify bacterial and fungal DNA, as well as parasitic RNA, with high sensitivity and specificity. It provides faster and more accurate results than traditional culture or microscopy methods, enabling targeted treatment for vaginal infections.
Test Types
- Vaginitis PCR Panel: Detects DNA or RNA of bacterial, fungal, and parasitic pathogens linked to vaginitis.
- Vaginal pH Testing: Measures pH imbalance, which is often elevated in BV.
- Wet Mount Microscopy: Identifies yeast cells, clue cells (BV), and Trichomonas parasites.
- Gram Stain: Assesses bacterial composition and presence of lactobacilli.
- Culture (Yeast or Trichomonas): Used for resistant or uncommon strains.
Test Results & Ranges
| Test Component: | Normal Range: | Abnormal (Indicates Infection): |
|---|---|---|
| Gardnerella vaginalis (BV-associated bacteria) | Not detected | Detected – Suggests Bacterial Vaginosis (BV) |
| Atopobium vaginae (BV-associated bacteria) | Not detected | Detected – Common in persistent BV |
| Lactobacillus species (Normal Flora) | Detected | Low or Not Detected – Suggests BV |
| Mobiluncus species (BV-associated bacteria) | Not detected | Detected – Associated with BV |
| Mycoplasma hominis (BV-associated bacteria) | Not detected | Detected – Can contribute to BV |
| Ureaplasma species (BV-associated bacteria) | Not detected | Detected – Sometimes found in BV |
| Candida albicans (Yeast) | Not detected | Detected – Indicates vaginal yeast infection |
| Candida glabrata (Yeast, Non-albicans species) | Not detected | Detected – Can cause recurrent yeast infections |
| Candida tropicalis, Candida parapsilosis, Candida krusei | Not detected | Detected – Other fungal species causing candidiasis |
| Trichomonas vaginalis (Parasite – STI) | Not detected | Detected – Confirms Trichomoniasis (STD) |
| Vaginal pH | 3.8 – 4.5 | >4.5 – Suggests BV |
| Clue Cells (Microscopy) | None | Present – Indicates BV |
| Yeast Cells (Microscopy) | None | Present – Suggests candidiasis |
| Motile Trichomonads (Microscopy) | None | Present – Confirms Trichomoniasis |
Interpreting Abnormal Results:
- Bacterial Vaginosis (BV)
- Positive for BV-associated bacteria (Gardnerella, Atopobium, etc.)
- Low Lactobacillus species
- Elevated pH (>4.5)
- Symptoms: Thin, grayish-white discharge, fishy odor, vaginal irritation
- Treatment: Metronidazole or Clindamycin
- Vaginal Yeast Infection (Candidiasis)
- Positive for Candida species (Yeast)
- Normal pH (3.8–4.5)
- Symptoms: Thick, white “cottage cheese” discharge, intense itching, irritation
- Treatment: Antifungals (Fluconazole, Clotrimazole)
- Trichomoniasis (STD – Trichomonas vaginalis)
- Positive for Trichomonas vaginalis (parasite)
- Elevated pH (>4.5)
- Symptoms: Green-yellow frothy discharge, foul odor, vaginal redness, pain during intercourse
- Treatment: Metronidazole or Tinidazole (partner treatment required)
Expected Turnaround Time
- Vaginitis PCR Panel: 24–48 hours
- Vaginal pH Testing: Immediate
- Microscopy (Wet Mount, Gram Stain): Same day
- Culture (Yeast or Trichomonas): 2–5 days
Specimen Requirements
- Sample Type: Vaginal swab
- Container: Sterile collection tube or transport medium
Collection Instructions
- Avoid douching, vaginal creams, or medications for 24 hours before testing.
- Do not engage in sexual activity for at least 24 hours prior to the test.
- Wash hands and use a sterile swab to collect a sample from the vaginal canal.
- Place the sample in the sterile transport container and deliver it to the lab promptly.
Test Details
Clinical Use:
- Diagnoses Bacterial Vaginosis (BV): Identifies imbalances in vaginal flora.
- Detects Yeast Infections (Candidiasis): Differentiates Candida species.
- Confirms Trichomoniasis (STD): Detects the parasite Trichomonas vaginalis.
- Guides targeted treatment for accurate and effective therapy.
Common Pathogens Detected:
-
Bacteria (BV-associated organisms): Gardnerella vaginalis, Atopobium vaginae, Mobiluncus species, Mycoplasma hominis, Ureaplasma species
-
Fungi (Candida species, Yeast): Candida albicans, Candida glabrata, Candida tropicalis, Candida parapsilosis, and Candida krusei
-
Parasite (Trichomoniasis – STI): Trichomonas vaginalis
Limitations: False negatives may occur if an insufficient sample is collected. PCR detects DNA/RNA from both live and dead organisms, so clinical correlation is necessary. Not a substitute for culture in resistant infections.
Additional Notes
-
PCR testing is recommended for patients with:
- Recurrent vaginal infections
- Unclear diagnosis between BV, Yeast Infection, and Trichomoniasis
- Persistent symptoms despite previous treatment
- High-risk sexual activity for Trichomoniasis (STI)
-
If both BV and Candida are detected, treatment should address both infections simultaneously, as mixed infections can occur.
-
Trichomoniasis is an STI – Partner treatment is necessary to prevent reinfection.
Why Choose the Vaginitis PCR Panel?
- Highly accurate detection of BV, Yeast, and Trichomoniasis
- Faster results than traditional culture methods
- Differentiates infections for correct treatment
- Essential for recurrent or complicated cases
The Vaginitis Panel (PCR Test) ensures fast, precise, and comprehensive diagnosis of vaginal infections, leading to better treatment and patient outcomes.