Very concentrated urine! What is her 24 hour urine volume?? What is her serum urea/Na/K/HCO3/Osmolal and height please? What is the likelihood of DI???

Kind regards

Ali

Kind Regards

ALi

Dr Ali Al-bahrani  MBCh.B MSc.Chem Path.  EuClin.chem. CSci. FRCPath.
Lead Pathologist for Blood Sciences
Consultant Chemical Pathologist and metabolic medicine and HOD of Blood Sciences
St Mary's Hospital
Newport
Isle of Wight
PO30 5TG
United Kingdom
Te: 01983 534859/534917

Dear collective,

We have a very unusual urine creatinine result - which has been confirmed by both enzymatic and Jaffe assays, and confirmed on 3 previous occasions.

The female patient is a reasonably well 72 years old. She is not taking any medication of note (and not taking any “internet potions”), her BMI is 40 and she does not have a myopathy. Her serum creatinine (enzymatic assay) is 76umol/L.

Urine results are as follows:-

Urine sodium = 173 mmol/L

Urine potassium = 34 mmol/L

Urine urea = 292 mmol/L

Urine creatinine = <0.1 mmol/L

Urine osmolality = 781 mosm/kg.

Any ideas?

Kind regards

Ian Barlow

Consultant Biochemist

Chemical Pathology Clinical Director

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