Bladderly’s Urine Volume Measurement: Accuracy Explained
- Team proudP
- 4 days ago
- 3 min read
Why Traditional Bladder Diaries Fall Short
If you've ever tracked your urinary habits for health reasons, you know the drill: carry around a measuring cup, carefully collect and measure each time you go, then write it all down. Doctors rely on these bladder diaries to assess urinary health, make accurate diagnoses, develop effective treatment plans, and provide documentation to justify medical necessity for health insurance coverage.
However, they come with significant limitations:
They're inconvenient – Who wants to carry and use a measuring cup throughout their day?
They're often inaccurate – Studies show measurements can be off by 50-100mL
People don't stick with them – Only 50% of patients complete their diaries as instructed (Source)
*Palnaes & Klarskov, 1994 - This study is mentioned in the original text as the source for the subjective readings error range of ±50-100mL.
A Better Solution: Sound-Based Voided Volume Measurement
Bladderly takes a completely different approach. Instead of asking you to measure anything, our app simply listens to the sound of urination and uses advanced technology to calculate the volume automatically.
How We Validated Bladderly's urine volume measurement accuracy
We conducted rigorous testing to ensure Bladderly's urine volume measurements are trustworthy:
Large-scale testing: We collected data from 508 participants, generating 584 valid measurements
Advanced AI analysis: We used artificial intelligence (specifically a 2D-CNN model) to analyze sound patterns from urination
Scientific validation method: We compared our sound-based measurements against precise weight-based measurements (the gold standard)
Cross-validation: We used fivefold cross-validation to ensure consistent performance
What Our Research Found
The results exceeded our expectations:
Strong correlation: 0.92 correlation with weight-based measurements (p < 0.001)
Excellent accuracy: Measurements were within ±10 mL (95% confidence interval)
Minimal difference: Average difference of just -5.5 mL between methods
*D. R. Small - This study is referenced in the original as the source for the measurement error of portable bladder scanners (average difference of 16.7 mL).
To put this in perspective, the standard clinical device used to measure bladder volume (portable bladder scanners) has an average error of 16.7 mL – three times higher than Bladderly's average difference of 5.5 mL.
Inclusive Technology: Scientifically Validated for Both Men and Women
96%+ accuracy for men, 94%+ for women
Unlike competitors who focus exclusively on men's urinary health, Bladderly was developed with scientific rigor for everyone. We recognize that anatomical differences, urination postures and behaviors significantly affect sound patterns, requiring distinct approaches:
Gender-specific algorithms: We've developed and validated separate models for both men and women
Comprehensive data collection: Our research included substantial sample sizes for both genders
Equal commitment to accuracy: Our technology delivers exceptional precision regardless of gender
This inclusive approach ensures that all users receive equally accurate results, addressing a significant gap in the market where women's urinary health tracking has been historically underserved by technology solutions.
Gender | Measurements | Accuracy |
Male | 325 | >96% |
Female | 195 | >94% |
What This Means For You
Bladderly transforms the tedious task of keeping a bladder diary into something simple and accurate. No measuring cups, no manual logging – just your phone and our app.
For those managing urinary conditions, monitoring progress, or sharing information with healthcare providers, Bladderly offers clinical-grade urine volume measurement accuracy with everyday convenience.
Take control of your urinary health the smart way with Bladderly – the clinically validated solution that makes tracking both easy and accurate.
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