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Urinalysis and Urine Kidney Markers

Specific gravity — lab reference

Hydration and concentrating ability affect result.

Based on teaching by Dan Purser, MD. How we prepare these guides

Updated Sep 23, 2026 · Educational reference

Purser Wellness reference range

This is Purser Wellness’s adult reference. Your own lab may print a different interval. Some entries need more context than a single number.

Unit
ratio
Male
1.002-1.030
Female
1.002-1.030

How to read this marker

Hydration and concentrating ability affect result.

The wider testing context

How a urine sample was collected matters. Hydration, exercise, menstruation, infection, and whether a finding appears again can all change what it means.

Using this range

These are starting ranges for adults who are not pregnant, unless this page says otherwise. Your lab may use a different range. Compare the units, sample, and collection details with your own report. Medicines and health history also matter. Ask your clinician what your result means for you.

A question to bring to your visit

How does the Specific gravity range here compare with my lab’s range, and what else matters for me?

Compare with your report

Before discussing a result, keep these details together:

  • Your result and its units
  • The range printed by your own lab
  • When the sample was collected, and the sample type or method if shown
  • Medicines, supplements, and changes in your health that may matter

A number on this page cannot diagnose a condition or choose a treatment for you. Your clinician can help put it in context.

Dr. Purser’s adult reference range may differ from the range printed by your lab. Compare the units and discuss your result with your clinician.

Names you may see

Specific gravity