Kidney Health - Bloody Good
Infectious Disease Screening

Urine Micro/Culture/Sensitivities (Urine MCS)

Urine Micro/Culture/Sensitivities (Urine MCS) tests check for bacteria, fungi, or other microbes in the urine. The microscopy stage looks for cells, crystals, and signs of infection or inflammation. If bacteria are found, a culture grows them to confirm the type, and sensitivity testing shows which antibiotics are most effective. This test is a key tool for diagnosing urinary tract infections (UTIs) and guiding the right treatment.

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Urine Micro/Culture/Sensitivities (Urine MCS)

Experiencing burning during urination, frequent urination, or pelvic pain and wondering if you have a urinary tract infection that needs specific antibiotic treatment?

Overview

Think of a urine MCS as a three-part detective story for your urinary tract health. First, microscopy acts like a high-powered magnifying glass, examining your urine for clues like white blood cells (your body's infection fighters), red blood cells, and bacteria that signal trouble brewing. Next, the culture portion works like growing a bacterial garden, allowing any harmful microorganisms to multiply so doctors can identify exactly what's causing your symptoms. Finally, sensitivity testing puts the identified culprits through a matchmaking process with different antibiotics to find which medication will be your infection's worst enemy.

This comprehensive approach is especially valuable because urinary tract infections are incredibly common, and getting the wrong treatment can lead to recurring infections or more serious complications like kidney problems. The sensitivity testing is like having a personalized roadmap for your treatment, ensuring you get the most effective antibiotic rather than playing guessing games with your health. In today's world where some bacteria have become resistant to certain medications, this targeted approach helps you recover faster while avoiding unnecessary antibiotics that might not work for your specific situation.

Reviewed by Dr. Vu Tran
Bloody Good’s Chief Medical Officer

Symptoms

You may benefit from this test if you experience:
Burning sensation during urination Pain during urination Frequent urination (more than 8 times per day) Blood in urine Cloudy or strong-smelling urine Recurrent bladder infections

Purpose

Essential for anyone with symptoms of urinary tract infection including burning urination, frequency, urgency, or pelvic pain. Important for monitoring recurrent UTIs, kidney infections, or complicated urinary tract conditions. Valuable for ensuring appropriate antibiotic selection and avoiding treatment failures or resistance development.

How to prepare

Collect midstream urine to avoid contamination from surrounding skin. Clean genital area with provided wipes before collection. Start urinating, then catch midstream portion in sterile container. Avoid touching inside of container or lid. Deliver to laboratory within 2 hours or refrigerate if delay is necessary. Inform healthcare provider about current antibiotics or recent treatment.

Understanding results

Microscopy: Normal shows <5 white blood cells/hpf, no bacteria, minimal epithelial cells. Culture: No growth or <10,000 CFU/mL indicates no significant infection. >100,000 CFU/mL typically indicates UTI. Sensitivity: S (Sensitive) means antibiotic should be effective; R (Resistant) means bacteria won't respond to that antibiotic; I (Intermediate) suggests borderline effectiveness.

After the test

If infection is confirmed, begin appropriate antibiotic based on sensitivity results. Complete full course of antibiotics even if symptoms improve. Follow-up testing may be recommended for complicated infections or to confirm clearance. Address underlying risk factors such as incomplete bladder emptying, sexual activity, or anatomical abnormalities. Increase fluid intake and practice good hygiene.

Frequently Asked Questions

  • Midstream collection avoids contamination from skin bacteria and vaginal secretions that could lead to false positive results or inappropriate antibiotic treatment.
  • Complete the full prescribed course even if symptoms improve quickly. Stopping early can lead to incomplete treatment and potential antibiotic resistance.
  • Contact your healthcare provider as this may indicate antibiotic resistance, reinfection, or an underlying condition requiring different treatment.
  • Yes, strategies include increased fluid intake, urinating after sexual activity, proper hygiene, cranberry products, and sometimes prophylactic antibiotics for frequent recurrences.
  • Mixed flora usually indicates contamination from normal skin or vaginal bacteria rather than a true infection, often requiring repeat collection with better technique.
  • Don't stop prescribed antibiotics without medical advice. If possible, collect urine before starting antibiotics for most accurate results, but never delay treatment for severe symptoms.
Urine Micro/Culture/Sensitivities (Urine MCS)

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