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Items: 1 to 20 of 72

1.

Within-subject biological variation of activated partial thromboplastin time, prothrombin time, fibrinogen, factor VIII and von Willebrand factor in pregnant women.

Kristoffersen AH, Petersen PH, Bjørge L, Røraas T, Sandberg S.

Clin Chem Lab Med. 2018 Jul 26;56(8):1297-1308. doi: 10.1515/cclm-2017-1220.

PMID:
29648994
2.

Valid analytical performance specifications for combined analytical bias and imprecision for the use of common reference intervals.

Hyltoft Petersen P, Lund F, Fraser CG, Sandberg S, Sölétormos G.

Ann Clin Biochem. 2018 Sep;55(5):612-615. doi: 10.1177/0004563217752963. Epub 2018 Jan 30.

PMID:
29310466
3.

Gender-partitioned patient medians of serum albumin requested by general practitioners for the assessment of analytical stability.

Hansen SI, Petersen PH, Lund F, Fraser CG, Sölétormos G.

Clin Chem Lab Med. 2018 Apr 25;56(5):843-850. doi: 10.1515/cclm-2017-0771.

PMID:
29252189
4.

Separate patient serum sodium medians from males and females provide independent information on analytical bias.

Hansen SI, Petersen PH, Lund F, Fraser CG, Sölétormos G.

Clin Chem Lab Med. 2017 Oct 26;55(12):1865-1872. doi: 10.1515/cclm-2016-1010.

PMID:
28448271
5.

Biological variation: Evaluation of methods for constructing confidence intervals for estimates of within-person biological variation for different distributions of the within-person effect.

Røraas T, Støve B, Petersen PH, Sandberg S.

Clin Chim Acta. 2017 May;468:166-173. doi: 10.1016/j.cca.2017.02.021. Epub 2017 Feb 28.

PMID:
28257883
6.

The variation in high sensitive cardiac troponin concentration during haemodialysis treatment is not similar to the biological variation observed in stable end stage renal disease patients.

Skadberg Ø, Sandberg S, Røraas T, Petersen PH, Sellevoll H, Svarstad E, Sæle K, Aakre KM.

Scand J Clin Lab Invest. 2016 Dec;76(8):645-652. Epub 2016 Oct 5.

PMID:
27705007
7.

Different percentages of false-positive results obtained using five methods for the calculation of reference change values based on simulated normal and ln-normal distributions of data.

Lund F, Petersen PH, Fraser CG, Sölétormos G.

Ann Clin Biochem. 2016 Nov;53(6):692-698. doi: 10.1177/0004563216643729. Epub 2016 Sep 28.

PMID:
27151961
8.

Biological Variation: The Effect of Different Distributions on Estimated Within-Person Variation and Reference Change Values.

Røraas T, Støve B, Petersen PH, Sandberg S.

Clin Chem. 2016 May;62(5):725-36. doi: 10.1373/clinchem.2015.252296. Epub 2016 Mar 21.

9.

Clinical Use of Cancer Biomarkers in Epithelial Ovarian Cancer: Updated Guidelines From the European Group on Tumor Markers.

Sölétormos G, Duffy MJ, Othman Abu Hassan S, Verheijen RH, Tholander B, Bast RC Jr, Gaarenstroom KN, Sturgeon CM, Bonfrer JM, Petersen PH, Troonen H, CarloTorre G, Kanty Kulpa J, Tuxen MK, Molina R.

Int J Gynecol Cancer. 2016 Jan;26(1):43-51. doi: 10.1097/IGC.0000000000000586.

10.

Confirmation of analytical performance characteristics required for the reference change value applied in patient monitoring.

Petersen PH, Fraser CG, Lund F, Sölétormos G.

Scand J Clin Lab Invest. 2015 Nov;75(7):628-30. doi: 10.3109/00365513.2015.1057897. No abstract available.

PMID:
26305425
11.

Monitoring performance of progression assessment criteria for cancer antigen 125 among patients with ovarian cancer compared by computer simulation.

Abu Hassan SO, Petersen PH, Lund F, Nielsen DL, Tuxen MK, Sölétormos G.

Biomark Med. 2015;9(9):911-22. doi: 10.2217/bmm.15.47. Epub 2015 Jul 6.

PMID:
26145714
12.

Median of patient results as a tool for assessment of analytical stability.

Jørgensen LM, Hansen SI, Petersen PH, Sölétormos G.

Clin Chim Acta. 2015 Jun 15;446:186-91. doi: 10.1016/j.cca.2015.04.024. Epub 2015 Apr 25.

PMID:
25920692
14.

Defining analytical performance specifications: Consensus Statement from the 1st Strategic Conference of the European Federation of Clinical Chemistry and Laboratory Medicine.

Sandberg S, Fraser CG, Horvath AR, Jansen R, Jones G, Oosterhuis W, Petersen PH, Schimmel H, Sikaris K, Panteghini M.

Clin Chem Lab Med. 2015 May;53(6):833-5. doi: 10.1515/cclm-2015-0067. No abstract available.

15.

Terms and symbols used in studies on biological variation: the need for harmonization.

Simundic AM, Kackov S, Miler M, Fraser CG, Petersen PH.

Clin Chem. 2015 Feb;61(2):438-9. doi: 10.1373/clinchem.2014.233791. Epub 2014 Nov 17. No abstract available.

16.

Calculation of limits for significant bidirectional changes in two or more serial results of a biomarker based on a computer simulation model.

Lund F, Petersen PH, Fraser CG, Sölétormos G.

Ann Clin Biochem. 2015 Jul;52(Pt 4):434-40. doi: 10.1177/0004563214555163. Epub 2014 Sep 23.

PMID:
25249664
17.

Calculation of limits for significant unidirectional changes in two or more serial results of a biomarker based on a computer simulation model.

Lund F, Petersen PH, Fraser CG, Sölétormos G.

Ann Clin Biochem. 2015 Mar;52(Pt 2):237-44. doi: 10.1177/0004563214534636. Epub 2014 Apr 22.

PMID:
24757181
18.

Reprint of "Influence of analytical bias and imprecision on the number of false positive results using Guideline-Driven Medical Decision Limits".

Hyltoft Petersen P, Klee GG.

Clin Chim Acta. 2014 May 15;432:127-34. doi: 10.1016/j.cca.2014.04.002. Epub 2014 Apr 18. Review.

PMID:
24747109
19.

Changing from glucose to HbA1c for diabetes diagnosis: predictive values of one test and importance of analytical bias and imprecision.

Nielsen AA, Petersen PH, Green A, Christensen C, Christensen H, Brandslund I.

Clin Chem Lab Med. 2014 Jul;52(7):1069-77. doi: 10.1515/cclm-2013-0337.

PMID:
24659606
20.

Weekly and 90-minute biological variations in cardiac troponin T and cardiac troponin I in hemodialysis patients and healthy controls.

Aakre KM, Røraas T, Petersen PH, Svarstad E, Sellevoll H, Skadberg Ø, Sæle K, Sandberg S.

Clin Chem. 2014 Jun;60(6):838-47. doi: 10.1373/clinchem.2013.216978. Epub 2014 Mar 11.

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