Reducing Substances (Urine)
The urine reducing substances test detects sugars other than glucose, such as galactose, fructose, and lactose, using the Clinitest copper reduction method. It is used in infants to screen for inborn errors of metabolism such as galactosemia, where early detection and dietary intervention prevent severe complications. In adults it is rarely used but can flag hereditary fructose intolerance.
2 providers include this
Urinalysis
Negative
What is Reducing Substances (Urine)?
The urine reducing substances test detects sugars other than glucose, such as galactose, fructose, and lactose, using the Clinitest copper reduction method. It is used in infants to screen for inborn errors of metabolism such as galactosemia, where early detection and dietary intervention prevent severe complications. In adults it is rarely used but can flag hereditary fructose intolerance.
Why It Matters
Detects sugars other than glucose using copper reduction. Important in infants for detecting galactosemia and other metabolic disorders. In adults, positive results warrant investigation for hereditary conditions.
Which Providers Test Reducing Substances (Urine)?
Full Provider Comparison
| Provider | Includes | Annual Cost | Biomarkers |
|---|---|---|---|
 Superpower | — | $199 | 100+ (150 with ratios) |
 WHOOP Advanced Labs | — | $349 | 65 |
 Labcorp OnDemand | — | $398 | 40+ |
| — | $486 | 40+ | |
| — | $449 | 288 | |
| — | $349 | 100+ | |
| — | $829 | 54 | |
 Function Health | — | $365 | 160+ |
| — | $250 | 65 | |
| — | $495 | 80+ | |
| — | $895 | 100+ | |
| — | $1950 | 130+ | |
| ✓ | $375 | 95+ | |
| — | $Varies | 75+ | |
| ✓ | $190 | 100+ | |
| — | $99 | 50 | |
| — | $124 | 60 | |
| — | $349 | 130+ | |
| — | $349 | 80+ | |
| — | $375 | 85 | |
| — | $700 | 128 | |
| — | $99 | 100+ |
Frequently Asked Questions
What is Reducing Substances (Urine)?
The urine reducing substances test detects sugars other than glucose, such as galactose, fructose, and lactose, using the Clinitest copper reduction method. It is used in infants to screen for inborn errors of metabolism such as galactosemia, where early detection and dietary intervention prevent severe complications. In adults it is rarely used but can flag hereditary fructose intolerance.
What is the optimal range for Reducing Substances (Urine)?
The standard reference range for Reducing Substances (Urine) is Negative. Optimal ranges may differ based on individual health goals and expert recommendations.
Which blood test providers include Reducing Substances (Urine)?
2 out of 22 blood testing providers include Reducing Substances (Urine) in their panels. This biomarker has limited availability.
What category does Reducing Substances (Urine) fall under?
Reducing Substances (Urine) is categorized under Urinalysis. This category includes biomarkers that help assess related aspects of health and wellness.
Medical Disclaimer
This information is for educational purposes only and is not medical advice. Always consult with a qualified healthcare provider about your specific health needs.
Last reviewed:2026-04-12