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For information on testing services or answers to questions, our customer service team is ready to assist you.

Call us at 1 (800) 800 6060, Mon - Fri 8AM - 5PM PST (excluding holidays), or email us at  


New! You can now chat with us. Click chat window below, (homepage on mobile).

For information about payment options and policies, please go to 

National Labs makes every effort to address inquiries quickly. Thank you for stopping by, we look forward to talking with you soon. 

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