Opiorphin levels, ng/ml Median (range) Number of subjects
Subjects 26 ± 6 yr mean age Men Non-pregnant women Pregnant women 6 month pregnancy
BioFluids      
Bloodstream 0.96 (0.4-2.7) n=21 0.55 (0.2-3.4) n=16 0.11 (0.1-1.5) n=8
Urines 7 (4-27) n=15 4 (1-6) n=15  
Semen Healthy donors 12 (4.5-30.9) n=11    
Semen CBAVD 3.5 (3-8.5) n=5    
Milk 2-3 week post-delivery   8.3 (3-23) n=7  
Tears   (<2-183) n=9 220 (2-1109) n=15  
Saliva Basal conditions 53 (7-196) n=23 30 (6-219) n=10 78 (20-237) n=8
Saliva Stimulated conditions 163 (80-1057) n=18 158 (24-1091) n=13 60 (34-205) n=10
Table 1: Summary of opiorphin values in biological fluids of male and female volunteers.