Sentence examples for urine samples were substituted from inspiring English sources

McLaren also confirmed the allegations made by Rodchenkov that steroid-tainted urine samples were substituted with clean ones in Sochi by passing them through "a mouse hole".

McLaren also confirmed the staggering allegations made by Dr Grigory Rodchenkov, the head of the Moscow laboratory between 2005 and 2015, that steroid-tainted urine samples were substituted with clean ones in Sochi with the help of Russia's intelligence and anti-doping officials to enable athletes to pass doping tests.

"Well-known and elite athletes" were protected by the false reporting of lab results and the practice of sample-swapping, in which tainted urine samples were replaced with clean substitutes.

However Rodchenkov said that as many as 100 dirty urine samples were expunged during the Games.

Urine samples were taken three times a week to test for cocaine use.

Urine samples were analyzed for nitrogen.

Blood and urine samples were provided willingly by the patient.

Serum and urine samples were thawed and vortex mixed.

Urine samples were collected and frozen at -80°C until analysis.

Urine samples were analyzed to determine EtG and EtS levels.

Positive Urine samples were found mostly for C. albicans 11.5%%.