Samples are commonly used in medical field for examination purposes of samples collected from the body. Blood and Urine tests are the most common terms used in medical profession. Blood samples are collected for measurement of blood lipids and glucose.
For glucose measurement, plasma is used and glycated hemoglobin measurement requires whole blood. The urine samples are used for studying any infection, pregnancy confirmation etc. Many NGOs and government has launched a massive campaign for awareness on AIDS/HIV and safe sex.
For this purposes many organizations distribute free samples of condoms to ensure more awareness. Many leading condom companies have distributed the condoms for free as part of their Corporate Social Responsibility. Durex has distributed the free condoms in at least 19 countries all over the world as a part of CSR.