Diagnostic Tests for Polyuria
Diagnostic Test list for Polyuria:
The list of diagnostic tests
mentioned in various sources as
used in the diagnosis of Polyuria
- Physical examination
- Examine state of hydration
- Blood pressure
- Examine for signs of complications of Diabetes mellitus including cataracts, diabetes retinopathy, hypertension, ischemic heart disease, stroke, peripheral vascular disease, Candida skin and genital infections, peripheral neuropathy
- Blood tests
- Full blood count and ESR
- Renal function tests, electrolytes including calcium levels (elevated levels of calcium may cause Polyuria)
- Thyroid function tests
- Pituitary hormones (LH, FSH, TSH, ACTH, prolactin, GH), if suspect pituitary diabetes insipidus
- High plasma osmolality and high plasma sodium in diabetes insipidus
- Low plasma osmolality in habitual overdrinking
- Plasma ADH, if suspect Diabetes insipidus
- Fasting blood sugar level. Diagnosis of Diabetes mellitus requires fasting blood sugar level to be greater or equal to 7.0 mmol/L
- Random blood sugar level. Diagnosis of Diabetes mellitus requires random blood sugar level to be greater or equal to 11.1 mmol/L and the person must also have symptoms of elevated blood sugar including frequent urination, excessive thirst and unexplained weight loss
- 2 hour post 75g Oral glucose tolerance test for diagnosis of Diabetes mellitus in borderline cases or for diagnosis of gestational diabetes with a blood glucose level of greater or equal to 11.1 mmol/L
- HbA1C - measures the average blood glucose level over the past 3 months.
- PTH level - If increased this would suggest parathyroid tumor, parathyroid hyperplasia or ectopic PTH secretion.
- Urine tests
- Urinalysis will help determine if there is glucose in the urine and thus may suggest diabetes, chronic nephritis, hyperthyroidism or Fanconi syndrome
- Urine sample for microscopy and culture
- 24 hour urine volume and 24 hour fluid intake should be measured to determine if urine volume is substantially increased or normal
- Low urine osmolality in diabetes insipidus
- Spot urine sodium
- Water deprivation test, if suspect diabetes insipidus
- 24 hour urinary calcium level
- Radiological investigations
- X-Ray of the skull
- CT Brain , if suspect pituitary diabetes insipidus
- Parathyroid ultrasound scan may detect larger parathyroid tumors
- CT Scan or MRI parathyroid are more sensitive with detecting parathyroid tumors
- Renal biopsy - may be necessary if suspect kidney disease.
Home Diagnostic Testing
These home medical tests may be relevant to Polyuria causes:
- Bladder & Urinary Health: Home Testing:
- Prostate Health: Home Testing:
- Kidney Health: Home Testing:
Conditions listing medical symptoms: Polyuria:
The following list of conditions
have 'Polyuria' or similar
listed as a symptom in our database.
This computer-generated list may be inaccurate or incomplete.
Always seek prompt professional medical advice about the cause
of any symptom.
Select from the following alphabetical view of conditions which
include a symptom of Polyuria or choose View All.
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