Specimen containers are specialized vessels used to collect, store, and transport biological samples for testing and analysis. These containers come in various sizes and materials, such as plastic or glass, and are designed to prevent contamination and preserve the integrity of the samples. Common types include urine cups, blood tubes, and tissue jars. Proper labeling and handling of specimen containers are crucial to ensure accurate test results. Each container is often equipped with a secure lid and may contain preservatives or additives specific to the type of sample being collected. This helps maintain the quality of the specimen until it reaches the laboratory for examination.