Recognizing the Signs of a Yeast Infection

Spotting a yeast infection early means getting treatment sooner. These are the symptoms that point to yeast rather than something else.

Itching and irritation:

• Persistent discomfort: ongoing itch around the vagina is the classic sign.
• Worse at night: it often gets worse when you're trying to sleep.
• Vulvar irritation: the itch can extend to the vulva.

Burning when peeing or during sex:

• Urination: a sharp burn when you pee, because the urine hits already inflamed tissue.
• Intercourse: pain or burning during sex from sensitive, inflamed tissue.

Redness and swelling of the vulva:

• Visible changes: the vulva looks red and swollen from the inflammation.
• Tenderness: the area is sore to the touch.

Discharge:

• Thick and white: yeast discharge is often described as looking like cottage cheese, and it's usually odourless.
• Clumpy: it's not watery, it's clumpy.
• No strong smell: unlike bacterial vaginosis, yeast doesn't give off a strong odour.

When to See a Doctor

• Severe itching: if it's unbearable or OTC treatments aren't helping.
• Significant discomfort: severe burning or pain that disrupts daily life.
• Fever: a fever with these symptoms can mean a more serious infection.

Recurring Infections

• Frequent infections: more than four yeast infections in a year is a reason to see a doctor. There may be an underlying cause.
• Symptoms come back fast: if they return right after treatment, you need a more thorough evaluation.

Why Test for Yeast?

Testing confirms Candida, the fungus behind yeast infections, and rules out conditions that look similar so you get the right treatment.

Catch It Early

Treatment prevents complications. Yeast infections cause real discomfort, and they can lead to skin cracks or sores that open the door to other infections. Recurrent yeast infections can also point to an underlying condition that needs medical attention.

Telling Yeast Apart from Other Conditions

A lot of conditions mimic yeast infections. Bacterial vaginosis and trichomoniasis cause similar symptoms but need different treatments. A vaginal pH test helps tell them apart: yeast doesn't change vaginal pH, but bacterial infections do. Getting the diagnosis right means getting the right treatment the first time.

How Do Doctors Test for Yeast Infection?

There are several testing methods. Here's what to expect.

Vaginal Secretion Testing

Collecting a sample: doctors usually start with a sample of vaginal discharge collected on a sterile cotton swab. The sample is then sent for testing.

Identifying the fungus: under the microscope, lab staff look for yeast cells and identify the species. Most yeast infections are Candida albicans, but other Candida species also cause infections.

Other Diagnostic Methods

Physical exam: a doctor may do a pelvic exam to look for redness, swelling, and abnormal discharge. It gives clues right away.

Microscopic analysis and culture:

• Microscopic analysis: vaginal fluid is placed on a glass slide and examined under a microscope. A saline or potassium hydroxide (KOH) wash can make yeast cells easier to see.
• Culture tests: when the microscopic look is inconclusive, the sample is placed in a growth medium to see what grows. This identifies the exact species, which helps pick the right treatment.

Molecular tests: nucleic acid amplification tests (NAAT) detect yeast DNA. They're highly accurate and can pick up small amounts of yeast. They're especially useful for recurrent or persistent infections where less common species might be involved.

Each method has its strengths. A physical exam gives quick clues. Microscopic and culture tests show more detail. Molecular tests are the most accurate, especially for recurrent infections.

Does Yeast Show Up in a Urine Test?

Usually no. Routine urine tests don't pick up yeast infections. There are some exceptions:

1. Severe yeast infections: in rare cases, especially in immunocompromised patients, yeast invades the urinary tract and shows up in urine.
2. Contamination: if there's a vaginal yeast infection and the sample isn't collected cleanly, yeast can end up in the urine sample by accident.
3. Foley catheters: patients with indwelling catheters can develop bladder yeast infections (candiduria) from long-term catheterization and weakened immunity. Yeast shows up in urine cultures in these cases.
4. False positives: sometimes what looks like yeast is actually a contaminant rather than a real urinary infection.

Diagnosing Yeast in Urine

If your doctor suspects a urinary yeast infection (candiduria), they may order:

• Urine culture: tells the difference between bacterial and fungal infections. If yeast grows, it's fungal.
• Microscopic exam: looking at urine sediment under a microscope can reveal yeast cells.

Yeast in urine usually means a urinary tract problem, not a vaginal yeast infection. It's more likely in people with diabetes, weakened immunity, or recent antibiotic use.

How This Compares to STI Tests

Yeast infections and STIs can look similar but they're tested differently.

• STI tests: chlamydia and gonorrhea use urine samples and NAAT. They work because they target specific bacterial DNA in the urinary tract.
• Yeast infection tests: NAAT can detect yeast DNA in urine, but it's not the go-to test. Vaginal swabs and cultures are more common because they sample the actual infection site.

Key differences:

• STIs: urine tests are standard because the bacteria show up there.
• Yeast: vaginal swabs are more accurate because they sample the site directly.

How to Test for Yeast at Home

Home testing is private and convenient. Here's how it works.

Types of At-Home Tests

Two main options:

1. Vaginal pH test strips: measure how acidic your vaginal fluid is.
2. Self-collection kits: you collect a discharge sample at home and ship it to a lab.

Both give you privacy and reasonably quick answers.

Vaginal pH Test Strips

pH strips are easy to use. They measure the acidity of vaginal fluid. The basic process:

1. Wash and dry your hands.
2. Take the strip out of its packaging without touching the test area.
3. Insert the included swab about two inches into the vagina. Rotate it gently for a few seconds.
4. Smear the swab on the test pad.
5. After about 30 seconds, match the strip's colour to the included chart.

Normal vaginal pH is 3.8 to 4.5. If your pH is in that range and you have symptoms, yeast is likely. If pH is higher, bacterial vaginosis or trichomoniasis is more likely.

Self-Collection Kits

Self-collection kits let you sample at home and mail it in:

1. Order the kit from a reputable source.
2. Follow the instructions to collect a discharge sample with the included swab.
3. Put the swab in the supplied container and mail it back.
4. Get results from the lab in a few days.

These tests can detect multiple causes of vaginitis, including yeast, BV, and trichomoniasis.

Limits of At-Home Testing

• Less thorough: home tests don't cover everything a doctor's tests do.
• Misdiagnosis risk: incorrect use or misreading the results can give you the wrong answer.
• Follow-up may be needed: if results are unclear or symptoms persist, see a doctor.

Cost

In Canada, testing is usually covered for people with provincial insurance like OHIP. Without insurance, most labs charge $15 to $20 for a swab. At TeleTest, you only pay for messaging the doctor to discuss symptoms and get treatment if needed. Home test kits run from $30 to $250.

A professional diagnosis matters. Doctors can run the right tests to pin down the cause and prescribe stronger treatments when needed, especially for severe or recurrent infections. They can also rule out look-alikes like bacterial vaginosis or STIs.

Disclaimer: This blog post is intended for educational purposes only and should not be taken as medical advice. Always consult your healthcare provider for personal health concerns.