Effective October 30, 2026
Optimal Range sells premade digital educational products (PDF guides and reference documents) about blood-test biomarkers, delivered electronically after purchase. We do not sell consultations, coaching, or any customised service, and no purchase creates a clinician–patient or advisory relationship of any kind.
Our products are for general education. They are not medical advice and are not a substitute for the advice of your own clinician. Biomarker ranges discussed are drawn from published research and are presented as educational information, not as diagnoses, treatment recommendations, or guarantees of any health outcome. Always consult your clinician about your own results before changing any medication, supplement, or health routine.
Payments are processed by Lemon Squeezy, which acts as merchant of record for purchases made through our store, including calculation and remittance of applicable taxes. Products are delivered digitally to the email address provided at checkout. Prices are shown in USD and may change for future purchases; a price change never affects a completed purchase.
A purchase grants you a personal, non-transferable licence to use the product for your own education. You may not resell, redistribute, publish, or share the product or its contents, in whole or in part.
Purchases are covered by our Refund Policy (30-day money-back guarantee).
To the maximum extent permitted by law, Optimal Range is not liable for any decisions you make based on educational content in our products. You are responsible for discussing your health with a qualified clinician.
Questions about these terms: reply to any email we have sent you, or use the contact route shown on your Lemon Squeezy receipt.
© 2026 Optimal Range. See also our Privacy Policy and Refund Policy.