Ligand leakage from immunoaffinity column

H. von Schenck, Roger H Unger

Research output: Contribution to journalArticlepeer-review


With a currently used immunoaffinity chromatography method with immobilized glucagon antibodies, we experienced leakage of the ligand during repeated desorption with formic acid. The formic acid eluates contained a glucagon binder that could be identified as the glucagon antibodies, i.e. the immobilized ligand had been disrupted. Thus, our first thought that we had recovered the applied human 'big plasma glucagon' (BPG) as a carrier of glucagon proved wrong. In conclusion, caution with formic acid as chaotropic agent is advisable.

Original languageEnglish (US)
Pages (from-to)527-531
Number of pages5
JournalScandinavian Journal of Clinical and Laboratory Investigation
Issue number6
StatePublished - 1983


  • Affinity chromatography
  • Big plasma glucagon
  • Formic acid desorption
  • Glucagon radioimmunoassay
  • Ligand leakage

ASJC Scopus subject areas

  • Clinical Biochemistry


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