1. GC–MS determination of amphetamines in serum using on-line trifluoroacetylation 
Előd Hidvégi, Péter Fábián, Zsuzsa Hideg, Gábor Somogyi 
Forensic Science International 
Volume 161, Issue 2, Pages (September 2006)
DOI: /j.forsciint
Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

2. Fig. 1
Selectivity test of amphetamine derivatives analyzed. First row: blank serum sample containing no internal standard; second row: spiked serum sample (at the concentration of 5ng/mL for amphetamine and methamphetamine and 10ng/mL for MDA, MDMA and MDEA); third row: serum sample spiked with internal standards at a concentration of 100ng/mL.
Forensic Science International  , DOI: ( /j.forsciint )
Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

3. Fig. 2
Results of the analyses of two real samples. Left: case 1, 27ng/mL amphetamine found in a hemolyzed serum sample, right: case 2, urine sample containing 85ng/mL MDA and MDMA concentration beyond the linear range (1406ng/mL).
Forensic Science International  , DOI: ( /j.forsciint )
Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions