1 - Programme Overview

Assessment of accuracy – quantitative methods

Participating labs can choose to be assessed for all the analytes of this programme, or simply a subset of analytes of interest.

2 - Assessment Frequency

Number of surveys per year: 6
Number of control samples per survey: 1 or 2
Number of samples per year: 12

The programme includes 20 analytes. Each analyte is controlled between 6 and 15 times a year.

3 - List of Analytes Assessed 

• Albumin (microalbumin)
• Albumin/creatinine ratio
• Beta-2 microglobulin*
• Calcium
• New - Calcium/creatinine ratio
• Chloride
• Creatinine
• Glucose
• Magnesium
• Osmolality (calculated or measured)
• Phosphate
• New - Phosphate/creatinine ratio
• Potassium
• Protein/creatinine ratio
• Sodium
• Total protein
• Urea
• Uric acid
• Urine pH*
• Urine specific gravity*

4 - Description of the Control Samples

Lyophilised human control urines (samples to be resuspended in 5 mL of distilled water).