The STI Multiplex PCR test is the most sensitive test for screening for the following 11 common STIs:
Neisseria gonorrhoea 
Chlamydia trachomatis (A-K0
Chlamydia trachomatis (L1-L3)
Mycoplasma hominis
Mycoplasma genitalium
Herpes simplex virus 1
Herpes simplex virus 2
Haemophilus ducreyi
Trichomonas vaginalis 
Ureaplama urealyticum/ parvum
Treponema pallidum
 
This test will provide you with a definitive positive/ negative result for the above listed 11 common STIs. 
 
Tests are most accurate 2 weeks after potential exposure. The standard test checks for genital infection. You may want to add oral or rectal swabs to your order if you have had oral or rectal sexual contact.