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Calcium addition to...
Calcium addition to EDTA plasma eliminates falsely positive results in the RSR GADAb ELISA
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- Nilson, Emma (författare)
- Lund University,Lunds universitet,Medicin, Lund,Sektion II,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Medicine, Lund,Section II,Department of Clinical Sciences, Lund,Faculty of Medicine
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- Ekholm, Birgitte (författare)
- Lund University,Lunds universitet,Medicin, Lund,Sektion II,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Medicine, Lund,Section II,Department of Clinical Sciences, Lund,Faculty of Medicine
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Rees Smith, B (författare)
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- Törn, Carina (författare)
- Lund University,Lunds universitet,Celiaki och diabetes,Forskargrupper vid Lunds universitet,Celiac Disease and Diabetes Unit,Lund University Research Groups
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- Hillman, Magnus (författare)
- Lund University,Lunds universitet,Medicin, Lund,Sektion II,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Medicine, Lund,Section II,Department of Clinical Sciences, Lund,Faculty of Medicine
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(creator_code:org_t)
- Elsevier BV, 2008
- 2008
- Engelska.
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Ingår i: Clinica Chimica Acta. - : Elsevier BV. - 0009-8981. ; 388:1-2, s. 130-134
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- BACKGROUND: The RSR ELISAs for GADAb and IA-2Ab are now widely used but due to a considerable number of falsely positive GADAb results obtained with EDTA plasma, it is recommended that only serum samples are run in these two assays. However, as EDTA plasma is often the preferred sample type in Europe we have assessed the possibility that adding Ca(2+) to plasma would reduce the number of falsely positive results. METHODS: Antibody positive as well as antibody negative diabetic subjects were included in the study (n=80). Serum and EDTA plasma were collected from the same subjects at the same occasion. Samples were divided into three groups; sera, EDTA plasma and EDTA plasma+Ca(2+). ELISA kits were supplied by RSR((R)) Ltd and performed according to the manufacturers instructions. RESULTS: GADAb analyses with plasma showed a markedly increased prevalence of GADAb positive subjects (81%) compared to sera (36%), indicating falsely positive results with plasma. Addition of Ca(2+) reduced the number of GADAb positive results to the same number obtained with serum. IA-2Ab positivity was not different between sera and plasma. CONCLUSION: EDTA plasma can be used in the RSR GADAb and IA-2Ab ELISAs if Ca(2+) is added prior to assay.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Klinisk laboratoriemedicin (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Clinical Laboratory Medicine (hsv//eng)
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- ref (ämneskategori)
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