Is a urine routine density of 1.005 normal

The urine routine density of 1.005 belongs to the low range, which may indicate urine dilution or abnormal renal function regulation. The abnormal urinary specific gravity is mainly related to excessive water intake, diabetes insipidus, chronic kidney disease, diuretic use, diabetes and other factors.

1. Excessive water intake:

Drinking a large amount of water in a short period of time can cause urine dilution, and the urine density can drop below 1.005. This situation belongs to physiological changes and usually has no pathological significance. It is recommended to observe fluctuations in urine density within 24 hours and avoid drinking more than 2000 milliliters of water at once.

2. Impact of diabetes insipidus:

Patients with central or renal diabetes insipidus have impaired urine concentration function due to abnormal antidiuretic hormone, and urine specific gravity is often fixed between 1.005-1.010. May be accompanied by symptoms of excessive drinking and urination, with a 24-hour urine output of 5-10 liters. Diagnosis needs to be confirmed through the banned water vasopressin test.

3. Chronic kidney disease: When the concentration function of renal tubules decreases, the urine specific gravity remains below 1.010. Commonly seen in chronic interstitial nephritis, hypertensive kidney damage, and other diseases, it may be accompanied by symptoms such as increased nocturia and anemia. Comprehensive evaluation should be conducted in combination with indicators such as blood creatinine and urinary microalbumin.

4. Diuretic use:

Diuretic drugs such as furosemide and hydrochlorothiazide can temporarily reduce urine density by inhibiting tubular reabsorption and increasing water excretion. After discontinuation, it usually returns to normal, and long-term use requires monitoring of electrolyte balance.

3. diabetes interference:

When blood glucose exceeds the renal glucose threshold, osmotic diuresis occurs, and the specific gravity of urine may be falsely reduced. The urine specific gravity of diabetes patients needs to be judged in combination with the indicators of urine sugar and urine ketone body. The typical symptom is "more than three and less".

It is recommended to recheck the first mid morning urine and avoid drinking water within 2 hours before the test. Continuous low specific gravity urine requires complete urine osmotic pressure and renal function tests. Daily attention should be paid to recording changes in urine output, controlling salt intake to below 5 grams per day, and avoiding excessive consumption of coffee or alcoholic beverages. When there are symptoms of polyuria, blood pressure and blood sugar should be monitored, and potassium rich foods such as bananas and spinach should be supplemented appropriately.