We like to keep things simple. We give you 90 days to try our products, and if you don't love your MDF Instruments® product, simply initiate a return by contacting us using the form below. Upon receipt of the returned product, we will issue a refund for the purchase price of the item(s) to the credit card used to place the order, not including the original shipping charges. Please give us a few days to process your return.

If for any reason you would like to exchange a product outside of our 90 Day Return policy please contact us.

Stethoscopes that have been engraved are not covered under the 90 Day Return policy. If you have received a stethoscope with an engraving error, please let us know and we will replace it. If your item arrives damaged or contains a manufacturer's defect, it is covered under our Lifetime Warranty™. If for any reason you would like to exchange a product outside of our 90 Day Return policy please contact us.

Returns: A 15% restocking fee of the total purchase price will be instituted for all Riester returns within 30 days. 
Warranty: Riester diagnostic sets are covered under the manufacturer's warranty for the duration of the students' academic careers.

If you are able to provide us with the original order number, we will process the refund under our 90 Day Return policy guidelines. If you do not have the original order number, we will not be able to offer a refund but we would be happy to offer an exchange and help find the perfect stethoscope for you.  Please note that the refund will be applied to the credit card that was used to place the order.

1. Contact us via the form below.  Please include the original purchase number, your name and the reason for the return request.  You may also call us at 818.357.5647 or email customer.service@mdfinstruments.com.

2. We will issue an RMA number (Return Merchandise Authorization). If an RMA number is not obtained prior to the return, a $5 handling fee will be applied.

3. Ship your instrument back to us. 

Returns must be shipped within five business days after the RMA is issued. All returns must be received within 10 business days of the RMA being issued. We are unable to refund any import duties/tariffs, original or return shipping costs.

Bulk returns may be subject to a 15% restocking fee.

Please write the RMA clearly on the outside of the package before returning the item back to MDF®. Please include all original packaging and accessories when returning an item. Returns must be shipped within five business days after the RMA is issued. All returns must be received within 10 business days of the RMA being issued.

We want you to love your stethoscope, so if you would like to make an exchange, please contact us via the form below. If there is a price difference, we will refund the difference on the original order or charge the difference if you would like to upgrade your MDF® Instrument.

We kindly request that you pay for the shipping cost to return your order. If you have received an incorrect or defective product, we would be happy to cover the shipping cost for you. For any issues with shipping your item for return, please contact us.

Please allow us a 7 to 14 business days to process your return and initiate the refund. We will contact you with any questions on your return but once the refund is processed, it will take 2-3 business to post in your account, depending on your bank.

We will gladly accept returns for items covered by the above warranty policies for repairs or replacement. We are unable to refund any import duties/tariffs, original, or return shipping costs for returns. We do not accept returns on stethoscopes that have been engraved.

Non-warranty returns will be subject to a 15% restocking fee. If an RMA (return material authorization) number is not obtained prior to the return, a $5 handling fee will also be applied.