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Serum Chemistry

[Serum Chemistry ]

EPTIS factsheet 142441 | Last revision 2024-05-22 | URL: https://www.eptis.bam.de/pts142441 https://www.eptis.bam.de/pts142441

PT provider
PT provider Weqas Weqas
Based in United Kingdom
Remarks The Serum Chemistry programme is available as part of a comprehensive suite of programmes to assess and monitor the performance of the routine Clinical Biochemistry laboratory’s repertoire of core tests used for the diagnosis and monitoring of disease. The interference of bilirubin in a number of spectrophotometric methods such as kinetic alkaline picrate creatinine assays (Jaffe) for creatinine assays is well known and for this reason, a separate programme is provided for bilirubin to ensure that a true assessment of method performance and bias can be provided in the Serum Chemistry Programme for those analytes affected by icteric interference. Four liquid human serum samples are distributed monthly, with a minimum of 48 samples distributed over the year covering a wide clinically relevant range. The samples consist of a panel of 8 linearly related samples distributed on a number of occasions over that period which are used to assess both laboratory and method performance, including linearity, bias, within and between batch imprecision. Trueness is also assessed for a number of analytes using high metrological order Reference measurement systems. Key Features: - Liquid human serum samples require no pre-analytical preparation. -Linearly related panel covering the pathological range with full traceability assists with your compliance to ISO 15189. - Traceable Reference Values used to assess analyser bias with uncertainty of measurement provided for Sodium, Potassium, Creatinine, e-GFR, Glucose, Calcium, Magnesium, Urate, Lithium, AST, ALT, GGT and LDH. - Interference studies distributed twice a year to assess the effect of positive HIL indices on the Serum Chemistry analytes. - Sigma metric scoring based on clinically relevant Milan Model 2 performance specification. For more information: https://www.weqas.com/services/eqa/serum-chemistry/ or contact@weqas.com
Product groups Health care / medical devices
Testing fields Medical analysis
Technical details
Test item Tested property Testing method
Off the clot human serum Sodium Routine testing methods (recommended)
Potassium Routine testing methods (recommended)
Chloride Routine testing methods (recommended)
Bicarbonate Routine testing methods (recommended)
Urea Routine testing methods (recommended)
Creatinine Routine testing methods (recommended)
eGFR Routine testing methods (recommended)
Glucose Routine testing methods (recommended)
Calcium Routine testing methods (recommended)
Adjusted Calcium Routine testing methods (recommended)
Phosphate Routine testing methods (recommended)
Total Protein Routine testing methods (recommended)
Albumin Routine testing methods (recommended)
Calculated Globulin Routine testing methods (recommended)
Magnesium Routine testing methods (recommended)
Urate Routine testing methods (recommended)
Lithium Routine testing methods (recommended)
Lipase Routine testing methods (recommended)
Osmolality Routine testing methods (recommended)
AST Routine testing methods (recommended)
ALT Routine testing methods (recommended)
ALP Routine testing methods (recommended)
CK Routine testing methods (recommended)
gamma GT Routine testing methods (recommended)
Total Amylase Routine testing methods (recommended)
Pancreatic Amylase Routine testing methods (recommended)
LDH Routine testing methods (recommended)
Iron Routine testing methods (recommended)
TIBC Routine testing methods (recommended)
Transferrin Routine testing methods (recommended)
Transferrin Saturation Routine testing methods (recommended)
Gentamicin Routine testing methods (recommended)
Aims of the PT scheme
Target group of participants To assess and monitor the performance of the routine Clinical Biochemistry laboratory’s repertoire of core tests used for the diagnosis and monitoring of disease.
Linked to specific legislation / standards Accreditation by UKAS on the basis of ISO/IEC 17025, 17043 and 15195
Additional, subsidiary aims validation of testing methods
Number of participants
Accredited or otherwise reviewed by a 3rd party

Accredited by UKAS on the basis of ISO/IEC 17043

Operation is commissioned / requested by
Fees and frequency
Participation fee https://www.weqas.com/participantzone/subscription-charges/
Regularly operated Yes (Frequency: Monthly. Samples: 4 x 3.0mL or 4 x 1.0mL.)
Year of first operation 1968
Contact details of the PT provider
Provider Contact person
Unit 6, Parc Ty Glas
CF14 5DU Cardiff
United Kingdom

Phone: 44 (0) 2920 314750
Web: http://www.weqas.com http://www.weqas.com
Laura Lloyd-Lewis
Phone: 44 (0) 29218 32884
Email: laura.lloyd-lewis@wales.nhs.uk laura.lloyd-lewis@wales.nhs.uk
If you find any mistakes please contact the responsible EPTIS coordinator in United Kingdom, Mr Savvas Xystouris. Mr Savvas Xystouris.
Any questions or problems? Please contact us at eptis@bam.de.
Application version: 1.23-SNAPSHOT.20230502124635-7925ae379a631fc1ececff45d2921c8db38877d5