TEM samples are analyzed through our contract lab McCall and Spero Environmental, Inc. To ensure proper billing, you must submit samples with the EHS TEM form.  You can ship the samples directly to them. The shipping address is:     1831 Williamson Court Blvd,  Suite 100     Louisville, Kentucky 40223 You may use any carrier you like, however, FedEx always arrives before any others. Using a carrier other than FedEx  may affect your turn-around time. For all packages mailed for Saturday analysis, please use FedEx  following these instructions:     1.   Make sure you have the current FedEx forms, mark and circle         " FedEx Priority Overnight" and " hold Saturday at FedEx Location"     2.    Print receipt and address as:             R. Dale McCall             McCall and Spero Environmental, Inc             4441 Produce Road             Louisville, Kentucky 40218     3.    Put a "Hold Saturday" sticker or write "Hold Saturday" on box. Not mandatory, but helpful. For shipment by airline: Take package to your local airport and ask for " counter-to-counter" services. MSE picks up the courier fees from the airport to our office for after-hour projects. Our airline preferences are Delta, Northwest, US Air and TWA. Please call MSE directly at (800) 841-0180 with tracking number and flight arrival time. Due to increased airport security,  tracking number is required to obtain the package.