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Items: 38

1.

Standardization of Free Thyroxine Measurements Allows the Adoption of a More Uniform Reference Interval.

De Grande LAC, Van Uytfanghe K, Reynders D, Das B, Faix JD, MacKenzie F, Decallonne B, Hishinuma A, Lapauw B, Taelman P, Van Crombrugge P, Van den Bruel A, Velkeniers B, Williams P, Thienpont LM; IFCC Committee for Standardization of Thyroid Function Tests (C-STFT).

Clin Chem. 2017 Oct;63(10):1642-1652. doi: 10.1373/clinchem.2017.274407. Epub 2017 Jul 18.

2.

Harmonization of Serum Thyroid-Stimulating Hormone Measurements Paves the Way for the Adoption of a More Uniform Reference Interval.

Thienpont LM, Van Uytfanghe K, De Grande LAC, Reynders D, Das B, Faix JD, MacKenzie F, Decallonne B, Hishinuma A, Lapauw B, Taelman P, Van Crombrugge P, Van den Bruel A, Velkeniers B, Williams P; IFCC Committee for Standardization of Thyroid Function Tests (C-STFT).

Clin Chem. 2017 Jul;63(7):1248-1260. doi: 10.1373/clinchem.2016.269456. Epub 2017 May 18.

3.

Using "big data" to describe the effect of seasonal variation in thyroid-stimulating hormone.

De Grande LA, Goossens K, Van Uytfanghe K, Halsall I, Yoshimura Noh J, Hens K, Thienpont LM.

Clin Chem Lab Med. 2017 Feb 1;55(2):e34-e36. doi: 10.1515/cclm-2016-0500. No abstract available.

PMID:
27447241
4.

Monitoring the stability of the standardization status of FT4 and TSH assays by use of daily outpatient medians and flagging frequencies.

De Grande LAC, Goossens K, Van Uytfanghe K, Das B, MacKenzie F, Patru MM, Thienpont LM; IFCC Committee for Standardization of Thyroid Function Tests (C-STFT).

Clin Chim Acta. 2017 Apr;467:8-14. doi: 10.1016/j.cca.2016.04.032. Epub 2016 Apr 27.

PMID:
27132242
5.

A Fresh Look at the Relationship between TSH and Free Thyroxine in Cross-Sectional Data.

De Grande LA, Van Uytfanghe K, Thienpont LM.

Eur Thyroid J. 2015 Mar;4(1):69-70. doi: 10.1159/000369796. Epub 2015 Feb 14. No abstract available.

6.

Monitoring laboratory data across manufacturers and laboratories--A prerequisite to make "Big Data" work.

Goossens K, Van Uytfanghe K, Twomey PJ, Thienpont LM; Participating Laboratories.

Clin Chim Acta. 2015 May 20;445:12-8. doi: 10.1016/j.cca.2015.03.003. Epub 2015 Mar 12.

PMID:
25771106
7.

The Empower project - a new way of assessing and monitoring test comparability and stability.

De Grande LA, Goossens K, Van Uytfanghe K, Stöckl D, Thienpont LM.

Clin Chem Lab Med. 2015 Jul;53(8):1197-204. doi: 10.1515/cclm-2014-0959.

PMID:
25720076
8.

Trueness and comparability assessment of widely used assays for 5 common enzymes and 3 electrolytes.

Goossens K, Van Uytfanghe K, Thienpont LM.

Clin Chim Acta. 2015 Mar 10;442:44-5. doi: 10.1016/j.cca.2015.01.009. Epub 2015 Jan 15. No abstract available.

PMID:
25598408
9.

Calculation of non-commutability budgets by t-testing.

Goossens K, Van Uytfanghe K, Thienpont LM.

Clin Chim Acta. 2015 Jan 1;438:212-3. doi: 10.1016/j.cca.2014.08.035. Epub 2014 Sep 6. No abstract available.

PMID:
25199850
10.

A Progress Report of the IFCC Committee for Standardization of Thyroid Function Tests.

Thienpont LM, Van Uytfanghe K, Van Houcke S, Das B, Faix JD, MacKenzie F, Quinn FA, Rottmann M, Van den Bruel A; IFCC Committee for Standardization of Thyroid Function Tests (C-STFT).

Eur Thyroid J. 2014 Jun;3(2):109-16. doi: 10.1159/000358270. Epub 2014 May 7.

11.

A statistical basis for harmonization of thyroid stimulating hormone immunoassays using a robust factor analysis model.

Stöckl D, Van Uytfanghe K, Van Aelst S, Thienpont LM.

Clin Chem Lab Med. 2014 Jul;52(7):965-72. doi: 10.1515/cclm-2013-1038.

PMID:
24566365
12.

A "Step-Up" approach for harmonization.

Van Uytfanghe K, De Grande LA, Thienpont LM.

Clin Chim Acta. 2014 May 15;432:62-7. doi: 10.1016/j.cca.2013.12.015. Epub 2013 Dec 18.

PMID:
24362230
13.

Determination of free thyroid hormones.

Thienpont LM, Van Uytfanghe K, Poppe K, Velkeniers B.

Best Pract Res Clin Endocrinol Metab. 2013 Oct;27(5):689-700. doi: 10.1016/j.beem.2013.05.012. Epub 2013 Jun 25. Review.

PMID:
24094639
14.

In Reply.

Vesper HW, Botelho JC, Tai SS, Van Uytfanghe K, Thienpont LM.

Clin Chem. 2013 Jul;59(7):1130-1. No abstract available.

15.

Isotope-dilution liquid chromatography-tandem mass spectrometry candidate reference method for total testosterone in human serum.

Botelho JC, Shacklady C, Cooper HC, Tai SS, Van Uytfanghe K, Thienpont LM, Vesper HW.

Clin Chem. 2013 Feb;59(2):372-80. doi: 10.1373/clinchem.2012.190934. Epub 2012 Dec 4.

16.

Harmonization of immunoassays to the all-procedure trimmed mean - proof of concept by use of data from the insulin standardization project.

Van Houcke SK, Van Aelst S, Van Uytfanghe K, Thienpont LM.

Clin Chem Lab Med. 2013 May;51(5):e103-5. doi: 10.1515/cclm-2012-0661. No abstract available.

PMID:
23152424
17.

IFCC international conventional reference procedure for the measurement of free thyroxine in serum: International Federation of Clinical Chemistry and Laboratory Medicine (IFCC) Working Group for Standardization of Thyroid Function Tests (WG-STFT)(1).

International Federation of Clinical Chemistry; Laboratory Medicine Working Group for Standardization of Thyroid Function Tests, Van Houcke SK, Van Uytfanghe K, Shimizu E, Tani W, Umemoto M, Thienpont LM.

Clin Chem Lab Med. 2011 Aug;49(8):1275-81. doi: 10.1515/CCLM.2011.639. Epub 2011 Jun 16.

PMID:
21675941
18.

Candidate reference measurement procedures for serum 25-hydroxyvitamin D3 and 25-hydroxyvitamin D2 by using isotope-dilution liquid chromatography-tandem mass spectrometry.

Stepman HC, Vanderroost A, Van Uytfanghe K, Thienpont LM.

Clin Chem. 2011 Mar;57(3):441-8. doi: 10.1373/clinchem.2010.152553. Epub 2011 Jan 19.

19.

Standardization activities in the field of thyroid function tests: a status report.

Thienpont LM, Van Uytfanghe K, Van Houcke S; IFCC Working Group for Standardization of Thyroid Function Tests (WG-STFT).

Clin Chem Lab Med. 2010 Nov;48(11):1577-83. doi: 10.1515/CCLM.2010.321. Epub 2010 Oct 29.

PMID:
21034252
20.

WITHDRAWN: Reply to the letter of Soldin et al.

Anckaert E, Poppe K, Van Uytfanghe K, Schiettecatte J, Foulon W, Thienpont LM.

Clin Chim Acta. 2010 Oct 1. [Epub ahead of print]

PMID:
20888810
21.

FT4 immunoassays may display a pattern during pregnancy similar to the equilibrium dialysis ID-LC/tandem MS candidate reference measurement procedure in spite of susceptibility towards binding protein alterations.

Anckaert E, Poppe K, Van Uytfanghe K, Schiettecatte J, Foulon W, Thienpont LM.

Clin Chim Acta. 2010 Sep 6;411(17-18):1348-53. doi: 10.1016/j.cca.2010.05.032. Epub 2010 May 25.

PMID:
20510682
22.

Report of the IFCC Working Group for Standardization of Thyroid Function Tests; part 1: thyroid-stimulating hormone.

Thienpont LM, Van Uytfanghe K, Beastall G, Faix JD, Ieiri T, Miller WG, Nelson JC, Ronin C, Ross HA, Thijssen JH, Toussaint B; IFCC Working Group on Standardization of Thyroid Function Tests.

Clin Chem. 2010 Jun;56(6):902-11. doi: 10.1373/clinchem.2009.140178. Epub 2010 Apr 15.

23.

Report of the IFCC Working Group for Standardization of Thyroid Function Tests; part 2: free thyroxine and free triiodothyronine.

Thienpont LM, Van Uytfanghe K, Beastall G, Faix JD, Ieiri T, Miller WG, Nelson JC, Ronin C, Ross HA, Thijssen JH, Toussaint B; IFCC Working Group on Standardization of Thyroid Function Tests.

Clin Chem. 2010 Jun;56(6):912-20. doi: 10.1373/clinchem.2009.140194. Epub 2010 Apr 15.

24.

Report of the IFCC Working Group for Standardization of Thyroid Function Tests; part 3: total thyroxine and total triiodothyronine.

Thienpont LM, Van Uytfanghe K, Beastall G, Faix JD, Ieiri T, Miller WG, Nelson JC, Ronin C, Ross HA, Thijssen JH, Toussaint B; IFCC Working Group on Standardization of Thyroid Function Tests.

Clin Chem. 2010 Jun;56(6):921-9. doi: 10.1373/clinchem.2009.140228. Epub 2010 Apr 15.

25.

Toward standardization of insulin immunoassays.

Miller WG, Thienpont LM, Van Uytfanghe K, Clark PM, Lindstedt P, Nilsson G, Steffes MW; Insulin Standardization Work Group.

Clin Chem. 2009 May;55(5):1011-8. doi: 10.1373/clinchem.2008.118380. Epub 2009 Mar 26.

26.

State-of-the-art of serum testosterone measurement by isotope dilution-liquid chromatography-tandem mass spectrometry.

Thienpont LM, Van Uytfanghe K, Blincko S, Ramsay CS, Xie H, Doss RC, Keevil BG, Owen LJ, Rockwood AL, Kushnir MM, Chun KY, Chandler DW, Field HP, Sluss PM.

Clin Chem. 2008 Aug;54(8):1290-7. doi: 10.1373/clinchem.2008.105841. Epub 2008 Jun 12.

27.

Pilot study for the standardization of insulin immunoassays with isotope dilution liquid chromatography/tandem mass spectrometry.

Rodríguez-Cabaleiro D, Van Uytfanghe K, Stove V, Fiers T, Thienpont LM.

Clin Chem. 2007 Aug;53(8):1462-9. Epub 2007 Jun 22.

28.

New liquid chromatography/electrospray ionisation tandem mass spectrometry measurement procedure for quantitative analysis of human insulin in serum.

Van Uytfanghe K, Rodríguez-Cabaleiro D, Stöckl D, Thienpont LM.

Rapid Commun Mass Spectrom. 2007;21(5):819-21. No abstract available.

PMID:
17279601
29.

Use of frozen sera for FT4 standardization: investigation by equilibrium dialysis combined with isotope dilution-mass spectrometry and immunoassay.

Van Uytfanghe K, Stöckl D, Ross HA, Thienpont LM.

Clin Chem. 2006 Sep;52(9):1817-21. Epub 2006 Jul 13.

30.

Feasibility study of the use of frozen human sera in split-sample comparison of immunoassays with candidate reference measurement procedures for total thyroxine and total triiodothyronine measurements.

Thienpont LM, Van Uytfanghe K, Marriott J, Stokes P, Siekmann L, Kessler A, Bunk D, Tai S.

Clin Chem. 2005 Dec;51(12):2303-11. Epub 2005 Oct 13.

31.
32.

Calculation of measurement uncertainty in clinical chemistry.

Stöckl D, Van Uytfanghe K, Cabaleiro DR, Thienpont LM.

Clin Chem. 2005 Jan;51(1):276-7; author reply 277. No abstract available.

33.

Metrologic traceability of total thyroxine measurements in human serum: efforts to establish a network of reference measurement laboratories.

Thienpont LM, Van Uytfanghe K, Marriot J, Stokes P, Siekmann L, Kessler A, Bunk D, Tai S.

Clin Chem. 2005 Jan;51(1):161-8. Epub 2004 Nov 18.

34.
35.

Evaluation of a candidate reference measurement procedure for serum free testosterone based on ultrafiltration and isotope dilution-gas chromatography-mass spectrometry.

Van Uytfanghe K, Stöckl D, Kaufman JM, Fiers T, Ross HA, De Leenheer AP, Thienpont LM.

Clin Chem. 2004 Nov;50(11):2101-10. Epub 2004 Sep 16.

36.

Metrological traceability of calibration in the estimation and use of common medical decision-making criteria.

Thienpont LM, Van Uytfanghe K, Rodríguez Cabaleiro D.

Clin Chem Lab Med. 2004;42(7):842-50. Review.

PMID:
15327021
37.
38.

Reference measurement systems in clinical chemistry.

Thienpont LM, Van Uytfanghe K, De Leenheer AP.

Clin Chim Acta. 2002 Sep;323(1-2):73-87. Review.

PMID:
12135808

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