Lateral flow test arrangement suitable for detection of an analyte in saliva, the arrangement comprising a carrier and a sequence of different polymeric pads arranged on said carrier , wherein said sequence of polymeric pads comprises in flow direction: - a sample pad composed of glass microfiber material, preferably glass microfiber material having a wicking rate of 3 to 5 s/2cm, a water absorption capacity of 35 to 40 mg/cm 2 and a density of 0,18 to 0,2 g/cm 3 , and the sample pad comprising a sample area for receiving a fluid sample to be analysed; - a conjugate pad comprising a conjugate area, said conjugate area comprising a conjugate, the conjugate area for contacting the fluid sample with the conjugate, the conjugate comprising a binding moiety specific for the analyte and a detection moiety, wherein the detection moiety of the conjugate comprises carboxyl-modified gold particles; - a membrane pad comprising a detection area for detection of analyte in the sample, the detection area comprising a test line and a control line arranged perpendicular to the flow direction, wherein the control line is arranged in flow direction downstream of the test line , wherein said test line comprises a compound which is bound specifically by the binding moiety of the conjugate (or a compound which binds specifically to the analyte), and wherein the control line comprises a compound which binds specifically to the binding moiety of the conjugate; and - a wicking pad comprising a wicking area for establishing fluid transport from the sample area to the wicking area; wherein the sample pad has been treated with solutions of a buffer salt and/or solutions of a surfactant prior to contacting the sample area with a fluid sample to be tested, and said buffer salt is selected from the group consisting of cetrimonium bromide (CTAB), chitosan, ethylenediaminetetraacetic acid (EDTA), CaCl 2 , KCI, NaCl and 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) or combinations thereof; and said surfactant is Pluronic ® F127. - a sample pad composed of glass microfiber material, preferably glass microfiber material having a wicking rate of 3 to 5 s/2cm, a water absorption capacity of 35 to 40 mg/cm 2 and a density of 0,18 to 0,2 g/cm 3 , and the sample pad comprising a sample area for receiving a fluid sample to be analysed; - a conjugate pad comprising a conjugate area, said conjugate area comprising a conjugate, the conjugate area for contacting the fluid sample with the conjugate, the conjugate comprising a binding moiety specific for the analyte and a detection moiety, wherein the detection moiety of the conjugate comprises carboxyl-modified gold particles; - a membrane pad comprising a detection area for detection of analyte in the sample, the detection area comprising a test line and a control line arranged perpendicular to the flow direction, wherein the control line is arranged in flow direction downstream of the test line , wherein said test line comprises a compound which is bound specifically by the binding moiety of the conjugate (or a compound which binds specifically to the analyte), and wherein the control line comprises a compound which binds specifically to the binding moiety of the conjugate; and - a wicking pad comprising a wicking area for establishing fluid transport from the sample area to the wicking area; <EOS>