Urine specific gravity
Urine specific gravity tells how concentrated the urine is — how much substance it contains relative to water. It mainly reflects hydration and the kidneys' ability to concentrate urine.
| Rating | Range | What it means |
|---|---|---|
| Worth improving | below 1.003 | Very dilute urine. High fluid intake or a concentrating disorder. |
| Good | 1.003 – 1.035 | Within range (relative density 1.003–1.035). |
| Worth improving | 1.035 and above | Very concentrated urine. Often dehydration. |
Why it matters
ECLM: reflects hydration and the kidneys' concentrating ability.
If it’s low
Low specific gravity means dilute urine — a lot of drinking or (if persistently low) a poorer ability of the kidneys to concentrate.
If it’s high
High specific gravity means concentrated urine — usually dehydration (too little drinking); less often an excess of substances (e.g. sugar, contrast agent).
What to do
It mainly reflects hydration — on its own it rarely requires action. Persistently low with excessive thirst/urination belongs to a doctor.
Read together with
Urine pH · Glucose in urine
This content is for information only and is not a substitute for medical advice. Talk to your doctor about your results.
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