Renal Stone Metabolic Screen
The patient collects 2 x 24 hr. urine collections (one with acid preservative) and when complete brings these to Basildon Pathology. On arrival, the patient will need to provide a fresh random urine into a plain universal and have a sample of blood taken. Both 24hr. urine collections, the random spot urine sample, and the blood sample are sent together with the request form to central reception in the Clinical Biochemistry laboratory.
For ease of laboratory handling the metabolic screen has been divided into 3 profiles.
EACH PROFILE MUST HAVE A SEPARATE LABORATORY NUMBER
Profile1: LMX CODE RSS1
Acidified urine for: Calcium, Oxalate, Citrate and Creatinine
Profile 2: LMX CODE RSS2
Plain urine for: Total Protein, Electrolytes (Na/K), Urea and Creatinine *
*Creatinine is measured on both collections to identify discrepancies which indicate incomplete urine.#
Profile 3: LMX CODE RSS3
Spot urine for pH, Cystine and Urate/Creatinine ratio
Blood sample in SST tube for Urea and Electrolytes, Calcium, Phosphate and Uric acid.
|Last edited 16/04/14|