Christiaan W. Sies

Christchurch, CAN, New Zealand

Last Updated: 09/26/2026

Save publications for later
Sign Up
Not sure about your diagnosis?
Check Your Symptoms
Found 13 publications

Reference intervals for deconjugated urine metanephrines by Bhattacharya analysis.

Reference intervals for deconjugated urine metanephrines by Bhattacharya analysis.

Journal: Annals of clinical biochemistry
Published: September 15, 2023

A case of macroenzyme aspartate aminotransferase (macro-AST) in a patient with seronegative rheumatoid arthritis.

A case of macroenzyme aspartate aminotransferase (macro-AST) in a patient with seronegative rheumatoid arthritis.

Journal: The New Zealand medical journal
Published: July 14, 2022

Development of a competitive binding homogeneous mobility shift assay for the quantification of adalimumab levels in patient serum.

Development of a competitive binding homogeneous mobility shift assay for the quantification of adalimumab levels in patient serum.

Journal: Journal of immunological methods
Published: June 19, 2019

Analytical and clinical validation of an LC-MS/MS method to measure thiopurine S-methyltransferase activity by quantifying d3-6-MMP.

Analytical and clinical validation of an LC-MS/MS method to measure thiopurine S-methyltransferase activity by quantifying d3-6-MMP.

Journal: Clinical biochemistry
Published: November 12, 2017

Quantitation of 25-hydroxyvitamin D in dried blood spots by 2D LC-MS/MS without derivatization and correlation with serum in adult and pediatric studies.

Quantitation of 25-hydroxyvitamin D in dried blood spots by 2D LC-MS/MS without derivatization and correlation with serum in adult and pediatric studies.

Journal: Clinica chimica acta; international journal of clinical chemistry
Published: June 19, 2017

Re-emergence of thiamine deficiency disease in the Pacific islands (2014-15): A case-control study.

Re-emergence of thiamine deficiency disease in the Pacific islands (2014-15): A case-control study.

Journal: PloS one
Published: May 08, 2017

Evaluation of Abbott Architect high-sensitivity troponin I assay for haemolysis interference.

Evaluation of Abbott Architect high-sensitivity troponin I assay for haemolysis interference.

Journal: Pathology
Published: October 31, 2015

Regional Variation in Analytical Techniques used in the Diagnosis and Monitoring of Porphyria: a Case for Harmonisation?

Regional Variation in Analytical Techniques used in the Diagnosis and Monitoring of Porphyria: a Case for Harmonisation?

Journal: The Clinical biochemist. Reviews
Published: July 31, 2015

Comparison of two plasma urate assays in patients receiving vitamin C supplementation.

Comparison of two plasma urate assays in patients receiving vitamin C supplementation.

Journal: Pathology
Published: May 07, 2014

Preanalytical stringency: what factors may confound interpretation of thiopurine S-methyl transferase enzyme activity?

Preanalytical stringency: what factors may confound interpretation of thiopurine S-methyl transferase enzyme activity?

Journal: Annals of clinical biochemistry
Published: July 02, 2013

Biological variation of thiopurine methyltransferase enzyme activity: when has a significant change taken place?

Biological variation of thiopurine methyltransferase enzyme activity: when has a significant change taken place?

Journal: Annals of clinical biochemistry
Published: June 19, 2013

A right Royal porphyria fallacy.

A right Royal porphyria fallacy.

Journal: Clinical chemistry
Published: January 20, 2012
Showing 1-12 of 13

Last Updated: 09/26/2026