The following websites are specific diagnostic labs. Procedures for taking and sending samples are precise and are provided by each laboratory.

• Cornell University's Plant Disease Diagnostic Clinic- The clinic provides fee-based disease dignostic services for anyone interested in plant diseases in the greenhouse. Another page will give detailed information on how to submit a plant sample to Cornell's Plant Disease Diagnostic Lab.
• Cornell's Insect Diagnostic Lab - If you need advice on how to identify and control a pest problem this website is a good place to start. For a fee Cornell's Insect Diagnostic Lab will help to identify the pest and will provide pest management suggestions. This site will give detailed instruction on how to submit a sample for ID, they also have a phone consultation option.
• Nutrient Testing Laboratories Ltd DBA Chemical Consulting of Babylon do soil testing and plant tissue analysis.
• J.R. Peters Laboratory offers growers nutritional analysis and quality control monitoring, including media, tissue, water and fertilizer solution analysis and physical analysis of soilless media.
• Fafard is a producer and supplier of peat moss, and other growing products. They offer analytical services for media, water, fertilizer and plant tissues/