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Items: 22

1.

Commutability of a Whole-Blood External Quality Assessment Material for Point-of-Care C-Reactive Protein, Glucose, and Hemoglobin Testing.

Bukve T, Sandberg S, Vie WS, Sølvik U, Christensen NG, Stavelin A.

Clin Chem. 2019 Jun;65(6):791-797. doi: 10.1373/clinchem.2018.300202. Epub 2019 Mar 11.

PMID:
30858160
2.

The Importance of Reagent Lot Registration in External Quality Assurance/Proficiency Testing Schemes.

Stavelin A, Riksheim BO, Christensen NG, Sandberg S.

Clin Chem. 2016 May;62(5):708-15. doi: 10.1373/clinchem.2015.247585. Epub 2016 Mar 15.

3.

Point-of-care urine albumin in general practice offices: effect of participation in an external quality assurance scheme.

Bukve T, Røraas T, Riksheim BO, Christensen NG, Sandberg S.

Clin Chem Lab Med. 2015 Jan;53(1):45-51. doi: 10.1515/cclm-2014-0483.

PMID:
25153401
4.

Diagnosing diabetes mellitus: performance of hemoglobin A1c point-of-care instruments in general practice offices.

Sølvik UØ, Røraas T, Christensen NG, Sandberg S.

Clin Chem. 2013 Dec;59(12):1790-801. doi: 10.1373/clinchem.2013.210781. Epub 2013 Aug 19.

5.

How to deal with semi-quantitative tests? Application of an ordinal scale model to measurements of urine glucose.

Petersen PH, Christensen NG, Sandberg S, Nordin G, Pedersen M; Nordic Control Organizations.

Scand J Clin Lab Invest. 2009;69(6):662-72. doi: 10.3109/00365510902968756.

PMID:
19499483
6.

[Choice of PT-INR instruments in primary health care].

Stavelin A, Omenås B, Bolann B, Christensen NG, Sandberg S.

Tidsskr Nor Laegeforen. 2008 Nov 20;128(22):2620. Norwegian. No abstract available.

7.

[Bad quality of sticks examinations].

Riksheim BO, Vie WS, Christensen NG, Aakre KM, Sandberg S.

Tidsskr Nor Laegeforen. 2008 May 15;128(10):1192. Norwegian. No abstract available.

8.

External quality assessment of prothrombin time: the split-sample model compared with external quality assessment with commercial control material.

Sølvik UØ, Stavelin A, Christensen NG, Sandberg S.

Scand J Clin Lab Invest. 2006;66(4):337-49.

PMID:
16777762
9.
10.

[Quality of rapid tests for determination of infectious mononucleosis].

Skurtveit KJ, Bjelkarøy WI, Christensen NG, Thue G, Sandberg S, Hoddevik G.

Tidsskr Nor Laegeforen. 2001 Jun 10;121(15):1793-7. Norwegian.

11.

[Better quality of thrombotest in family practice. Results from the NOKLUS survey 1993-97].

Gidske G, Christensen NG, Jevnaker M, Skurtveit KJ, Thue G, Klovning A, Sandberg S.

Tidsskr Nor Laegeforen. 1998 Mar 20;118(8):1196-200. Norwegian.

PMID:
9567696
12.

[Quality of hemoglobin and glucose analysis in general practice. Results from the NOKLUS (Norwegian Health Authority) surveys 1994].

Sandberg S, Christensen NG, Jevnaker M, Thue G, Klovning A.

Tidsskr Nor Laegeforen. 1996 Jan 10;116(1):25-9. Norwegian.

PMID:
8553330
13.

[Error of the reading-instrument for urinary strips].

Sandberg S, Christensen NG.

Tidsskr Nor Laegeforen. 1994 Sep 10;114(21):2533-4. Norwegian. No abstract available.

PMID:
7940461
14.

Performance of cell counters in primary health care.

Sandberg S, Thue G, Christensen NG, Lund PK, Rynning M.

Scand J Prim Health Care. 1991 Jun;9(2):129-33.

PMID:
1891657
15.

Performance of dry-chemistry instruments in primary health care.

Sandberg S, Christensen NG, Thue G, Lund PK.

Scand J Clin Lab Invest. 1989 Sep;49(5):483-8.

PMID:
2595243
16.

[Glucose analysis in general practice. An examination of 4 instruments designed for general practice and self-monitoring].

Christensen NG, Sandberg S, Ness KO, Jacobsen H.

Tidsskr Nor Laegeforen. 1989 Jun 10;109(16):1770-2. Norwegian.

PMID:
2749652
17.
18.

Evaluation of serum separator tubes as a mail transport device in primary health care.

Sandberg S, Christensen NG, Horgen E, Jacobsen H, Johansen K.

Scand J Prim Health Care. 1988 Nov;6(4):251-4.

PMID:
3231943
19.

[Quality control of laboratory analyses performed in general practice].

Sandberg S, Christensen NG.

Tidsskr Nor Laegeforen. 1988 Aug 30;108(24):1888-90. Norwegian. No abstract available.

PMID:
3206397
20.

[Dry chemistry in primary health service].

Christensen NG, Sandberg S, Ness K, Jacobsen H.

Tidsskr Nor Laegeforen. 1987 Sep 20;107(26):2236-40. Norwegian. No abstract available.

PMID:
3672458
21.
22.

A rapid assay for urinary porphyrins by dual-wavelength spectrophotometry.

Christensen NG, Johannessen B, Romslo I.

Clin Chim Acta. 1977 Dec 15;81(3):229-35.

PMID:
923095

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