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Table 1 The extraction efficiency (E) and enrichment factor (Ee) values of polyamines after flat sheet supported liquid membrane extraction from different volume of urine samples. The pH of urine was 7 and acceptor was 1 M HCl. Donor phase polyamines concentration was 50 μM. CV – coefficient of variation

From: A useful procedure for detection of polyamines in biological samples as a potential diagnostic tool in cancer diagnosis

Amine Sample volume
10 ml 20 ml 40 ml
E [%] Ee CV [%] E [%] Ee CV [%] E [%] Ee CV [%]
Ptr 86.7 4.3 6.7 81.5 8.1 3.4 63.2 12.6 22.0
Cdr 83.8 4.2 7.0 79.5 7.7 5.4 63.5 12.7 17.5
Spd 88.1 4.4 3.6 86.4 8.5 5.2 78.1 15.6 10.2
Spm 67.4 3.4 5.8 70.3 6.9 6.4 73.8 14.8 7.8