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A normal urine specific gravity means the kidneys are appropriately concentrating or diluting urine based on the body's fluid needs. The wide range (1.005–1.030) reflects the kidney's remarkable ability to adapt urine concentration to hydration status throughout the day. A normal value confirms basic kidney concentrating and diluting function is intact.
A specific gravity near 1.000 (essentially pure water) indicates the kidneys have almost no ability to concentrate or dilute urine beyond water. This is seen in diabetes insipidus (insufficient ADH or kidney resistance to ADH), very large overhydration, or end-stage kidney disease where concentrating ability is lost. Normal kidneys should be able to produce urine much more concentrated than water.
Seek medical evaluation. Diabetes insipidus, noticeable kidney disease, or very large overhydration needs to be assessed. Electrolytes and kidney function testing is needed.
Urine Specific Gravity: {{value}} — critically dilute (ref: {{low}}–{{high}}; critical: <1.001)Very dilute urine with specific gravity below 1.005 typically reflects high fluid intake, diuretic use, or early inability to concentrate urine. In most healthy people who drink large amounts of water, dilute urine is normal. However, persistent inability to concentrate urine above this level can indicate diabetes insipidus or early kidney concentrating defects.
If intentionally well-hydrated, this is normal. If spontaneous and accompanied by excessive thirst and urination, discuss diabetes insipidus with your doctor.
Urine Specific Gravity: {{value}} — very dilute (ref: {{low}}–{{high}}; dilute: 1.001–1.005)Dilute urine between 1.005 and 1.010 reflects good hydration or higher fluid intake. At this concentration, urine tests for protein, glucose, and other markers may be slightly less reliable as concentrations are diluted. The kidneys are producing appropriately dilute urine in response to adequate fluid intake.
Generally normal and indicates good hydration. If testing other urine markers, consider the dilution effect and use ratio-corrected results.
Urine Specific Gravity: {{value}} — dilute (ref: {{low}}–{{high}}; dilute: 1.005–1.010)A normal urine specific gravity means the kidneys are appropriately concentrating or diluting urine based on the body's fluid needs. The wide range (1.005–1.030) reflects the kidney's remarkable ability to adapt urine concentration to hydration status throughout the day. A normal value confirms basic kidney concentrating and diluting function is intact.
Normal result. No specific action needed.
Urine Specific Gravity: {{value}} — normal (ref: {{low}}–{{high}})An optimal specific gravity between 1.010 and 1.020 reflects a healthy balance between adequate hydration and normal kidney concentrating function. At this range, urine tests are most reliable for other markers, and the kidneys are operating in a comfortable mid-range. This is the sweet spot for both kidney health and urine test accuracy.
Excellent result. Good hydration and kidney function balance.
Urine Specific Gravity: {{value}} — optimal (ref: 1.010–1.020)A borderline high specific gravity indicates slightly concentrated urine, suggesting fluid intake could be increased or that the body is conserving fluid. At this level, the kidneys are concentrating urine normally in response to mildly reduced fluid availability. Other urine test markers may appear mildly amplified.
Increase fluid intake. Not concerning as an isolated finding.
Urine Specific Gravity: {{value}} — borderline concentrated (ref: {{low}}–{{high}}; borderline: 1.020–1.025)Concentrated urine with specific gravity above 1.025 indicates the kidneys are conserving water, most commonly due to dehydration or inadequate fluid intake. The kidneys are doing their job by conserving fluid, but the concentrated state increases risk of kidney stones, UTIs, and makes urine test results appear higher than their actual corrected values.
Drink more water throughout the day. Aim for pale yellow urine as a hydration target. If concentrated urine persists despite adequate fluid intake, discuss with your doctor.
Urine Specific Gravity: {{value}} — concentrated (ref: {{low}}–{{high}}; concentrated: 1.025–1.030)A specific gravity above 1.035 exceeds the maximum normal concentration capacity of the kidneys and suggests either significant dehydration with maximum antidiuretic hormone stimulation, SIADH (syndrome of inappropriate ADH — a condition causing excessive water retention), or a measurement artifact. This level of concentration puts the kidneys and other organs under significant stress.
Seek medical evaluation. Fluid intake should be increased if dehydration is the cause. If SIADH is suspected, electrolyte assessment and further evaluation are needed.
Urine Specific Gravity: {{value}} — critically concentrated (ref: {{low}}–{{high}}; critical: >1.035)Upload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.