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A new High Sensitive Functional Nephelometrical Assay for Assaying C- reactive protein in Serum Based on Phosphocholine Interaction
2015 (engelsk)Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
Abstract [en]

Abstract

C-reactive protein (CRP) is able to bind phosphocholine in the presence of calcium ions. According to a previous functional property of CRP, we tried to develop an affordable and cheap high sensitive nephelometric CRP assay using soy oil.

Serum samples were measured by Nephelometer BNII (Siemens), by mixing the serum with diluted soy oil emulsion (Intralipid

®

20%) and Tris-calcium buffer (PH 7.5). The measurement took place after 12 min incubation time at 37°C by measuring the agglutination between CRP and phosphocholine. Results from our automated functional assay were compared with results obtained using an immunoturbidimetric CRP assay.

Results showed a good correlation coefficient for method comparison between functional nephelometric CRP assay and immunoturbidimetric CRP assay, r = 0.895, significance level p <0.0001. The limit of detection for the functional nephelometric CRP assay was 0.1 mg/L. However, the within run % CV values for the functional assay were 6.1 % (20 mg/L), 4.7 % (50 mg/L) and 4.5 % (100 mg/L). The between-run % CV values were 17.6 % (20 mg/L), 18.8 % (50 mg/L), and 11.3 % (100 mg/L).

The new functional nephelometric CRP assay enables high sensitive CRP measurement in serum in the range of 0.1 mg/L to 300 mg/L. The functional assay could be used for veterinary analysis due to the ability to measure CRP according to the functional properties, not the morphological properties which depend on specific antibodies.

sted, utgiver, år, opplag, sider
2015. , s. 20
Emneord [en]
CRP, intralipid, nephelometer, immunoturbidimetric, agglutination.
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-244531OAI: oai:DiVA.org:uu-244531DiVA, id: diva2:789096
Utdanningsprogram
Biomedical Laboratory Science Programme
Presentation
, Uppsala (svensk)
Examiner
Tilgjengelig fra: 2015-02-17 Laget: 2015-02-17 Sist oppdatert: 2015-02-17bibliografisk kontrollert

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