A special HIV testing day will be held in The Health Shop on Broad Street in Nottingham today to mark national HIV testing week.
The city has a higher than average number of people diagnosed with the virus.
Figures which show the number of people in Northampton infected with HIV is almost double the national average have prompted a warning from a health charity.
The National AIDS Trust says routine blood testing should be introduced at Northampton General Hospital for all patients who are admitted to ensure new cases of HIV aren't missed
The number of cases of HIV in Northampton are almost double the national average. Healthcare bosses are being urged to rethink that policy.
But Northampton Healthcare NHS Trust says despite those figures applying to Northampton itself cases of HIV in the county as a whole stand at 1.6%, below the 2% threshold at which mandatory testing is recommended by t the Health Protection Agency.
A charity is calling for everyone routinely admitted to hospitals in Northamptonshire to be tested for HIV.
Levels of the virus in the county are double the national average. There is also concern that nearly 70% of HIV carriers in Northampton are diagnosed late.