Shipping Policy

Last Updated: September 1, 2026

At Kay Scientific, we understand that receiving your medical, diagnostic, and drug-testing supplies promptly is important. Our team works diligently to process orders quickly, package products carefully, and provide tracking information so you can follow your shipment.

Where We Ship

Kay Scientific currently ships only within the United States and eligible U.S. territories, including:

  • Puerto Rico
  • Guam
  • U.S. Virgin Islands
  • American Samoa
  • Northern Mariana Islands

We are not currently able to ship internationally.

Carrier availability, shipping methods, delivery times, and costs may vary for Alaska, Hawaii, and U.S. territories. Certain products or shipping services may not be available to every destination.

If you are unsure whether we can ship a particular product to your location, please contact us before placing your order.

Order Processing and Same-Day Shipping

Orders placed before 1:00 PM Pacific Time (PT) on business days will generally ship the same business day, subject to:

  • Product availability
  • Successful payment authorization
  • Order and account verification
  • Complete and accurate shipping information
  • Carrier pickup schedules
  • Any additional information required to process the order

For purposes of this policy, business days are Monday through Friday, excluding federal holidays and days when Kay Scientific or the applicable shipping carrier is closed.

Orders placed after 1:00 PM PT, on weekends, or on recognized holidays will generally be processed on the next business day.

Although we make every reasonable effort to ship qualifying orders the same day, same-day shipping is not guaranteed. Orders requiring additional verification, special handling, large-quantity preparation, or address clarification may require additional processing time.

Product Availability and Backorders

Most orders are processed based on current product availability. If an item becomes unavailable, is backordered, or requires additional processing time, we will make a reasonable effort to notify you using the contact information provided with your order.

Depending on product availability, an order may be:

  • Held until all products are available
  • Shipped in separate packages
  • Partially shipped, with the remaining products shipped when available
  • Modified or canceled with the customer’s approval

When an order ships in multiple packages, you may receive more than one tracking number. Separate packages may arrive on different days.

Shipping Methods and Charges

Available shipping methods and applicable charges will be displayed at checkout when available or communicated to you before the order is finalized.

Free or discounted shipping may be offered on qualifying orders or through special promotions. Unless otherwise stated, free-shipping offers apply only to standard shipping and may exclude:

  • Expedited or overnight delivery
  • Alaska, Hawaii, and certain U.S. territories
  • Oversized, heavy, or special-handling shipments
  • Special-order products
  • Orders requiring nonstandard carrier services

Any shipping cost shown at checkout is based on the information available at the time the order is placed. Additional charges may apply if the shipping address is incorrect, incomplete, considered a remote-delivery location, or requires special carrier services.

Estimated Delivery Times

Delivery times vary based on:

  • The shipping method selected
  • The destination
  • Carrier service availability
  • Weather and transportation conditions
  • Holidays and seasonal shipping volume
  • Local delivery conditions
  • Events outside the reasonable control of Kay Scientific

Processing time refers to the time required for Kay Scientific to prepare and release an order to the carrier. Transit time begins after the carrier accepts the shipment.

Delivery dates and transit times provided at checkout, in tracking information, or by a Kay Scientific team member are estimates unless Kay Scientific expressly confirms a guaranteed delivery service in writing.

Kay Scientific is not responsible for carrier delays caused by weather, transportation disruptions, natural disasters, holidays, labor interruptions, government actions, incorrect addresses, or other circumstances outside our reasonable control. However, our team will make a reasonable effort to help you obtain available tracking information and communicate with the carrier when appropriate.

Expedited Shipping

Expedited shipping may be available for certain products and destinations. Expedited delivery affects carrier transit time but does not necessarily reduce order-processing time.

Please contact us before placing a time-sensitive order if you need delivery by a specific date. We will help you determine the best available option, but delivery cannot be guaranteed unless a guaranteed carrier service is specifically purchased and confirmed.

Expedited-shipping charges are generally non-refundable after the order has been transferred to the carrier, except when otherwise required by law or when the carrier approves a service-guarantee claim.

U.S. Territory Shipments

Orders shipped to Puerto Rico, Guam, the U.S. Virgin Islands, and other eligible U.S. territories may require additional delivery time.

Depending on the destination, carrier, order value, and products purchased, additional shipping information or documentation may be required before the order can be released.

Customers are responsible for providing any identification, tax, business, consignee, or destination information reasonably required to complete the shipment. Any destination-specific taxes, fees, assessments, or carrier charges not collected at checkout may be the customer’s responsibility, unless otherwise agreed in writing.

Tracking Information

Once your order has shipped, tracking information will be sent to the email address or telephone number associated with the order when tracking is available.

Tracking activity may take up to 24 hours to appear after a shipping label is created. Receiving a tracking number does not always mean the carrier has physically scanned or accepted the package.

Please review your tracking information regularly and make arrangements to receive the shipment, especially for time-sensitive or high-value orders.

Shipping Addresses

Customers are responsible for providing a complete, accurate, and deliverable shipping address.

Before submitting an order, please verify:

  • Recipient or business name
  • Street address and suite, unit, or building number
  • City, state, and ZIP Code
  • Contact telephone number
  • Email address
  • Any delivery instructions needed by the carrier

If you notice an address error, contact us immediately at info@kayscientific.com or (619) 271-2059.

We will make every reasonable effort to correct the address before shipment, but we cannot guarantee that an address can be changed after an order has been processed, packed, or transferred to the carrier.

Additional carrier charges resulting from an incorrect, incomplete, or changed address may be charged to the customer.

Undeliverable, Refused, or Returned Shipments

If a shipment is returned to Kay Scientific because the address was incorrect or incomplete, the recipient was unavailable, delivery was refused, or the package was not claimed, we will contact the customer to determine the appropriate next step.

Additional shipping charges may apply if the customer requests reshipment.

If the customer no longer wants the order, any refund or account credit will be reviewed under our Return and Refund Policy. Original shipping charges, return-shipping charges, carrier fees, and an applicable restocking fee may be deducted when permitted.

Products that are no longer eligible for resale due to expiration, condition, temperature exposure, health considerations, or damage during an unauthorized return may not qualify for a refund or credit.

Damaged, Missing, or Incorrect Shipments

Please inspect your order promptly after delivery.

If your package arrives damaged, contains an incorrect product or quantity, or appears to be missing merchandise, contact Kay Scientific as soon as possible, preferably within five business days of delivery.

Please provide:

  • Your order number
  • A description of the issue
  • Photographs of the shipping box and packaging
  • Photographs of the product and any visible damage
  • Product lot number and expiration date, when applicable
  • A photograph of the shipping label

Please retain all merchandise, packaging, and shipping materials while we review the claim. The carrier or manufacturer may require an inspection or additional documentation.

When Kay Scientific confirms that an order was damaged in transit, shipped incorrectly, or incomplete, we will work with you to provide an appropriate replacement, refund, or account credit.

Packages Marked Delivered

If tracking shows that a package was delivered but you cannot locate it, please:

  1. Confirm that the shipping address on the order is correct.
  2. Check all entrances, receiving areas, mailrooms, parcel lockers, and other secure locations.
  3. Ask employees, household members, neighbors, property managers, or reception personnel whether they accepted the shipment.
  4. Contact the carrier for available delivery details.
  5. Notify Kay Scientific promptly if the package still cannot be located.

Kay Scientific will make a reasonable effort to assist with a carrier investigation or claim. Carrier investigations may take several business days, and replacements or refunds are not automatic while an investigation is pending.

The resolution of a lost-package claim may depend on the carrier’s findings, proof of delivery, shipping method, and other relevant circumstances.

Changes and Cancellations

If you need to change or cancel an order, contact us as soon as possible.

We will make every reasonable effort to accommodate your request. However, changes or cancellations cannot be guaranteed after an order has been processed, packed, or shipped.

Special-order products cannot be canceled after the order has been submitted to the manufacturer or supplier unless otherwise approved.

Questions About Your Shipment

If you have questions about an order, shipment, delivery estimate, or tracking information, please contact us:

Kay Scientific Inc.
3802 Main Street, Suite 10
Chula Vista, CA 91911

Phone: (619) 271-2059
Email: info@kayscientific.com

Our team will be happy to assist you.