I tried measure concentration of peptide LL-37 by methods (BCA, Bradford), but i am not successful. Concentration values very low comparble with expected values. There is another method to measure?

Or maybe problem is solubility of LL-37? I have LL-37 in this buffer (25 mM Tris, 100 mM NaCl, 2 mM DTT, pH = 8,5).

Thank you for answer...

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