A request for a new sample is a process question, not a paternity conclusion. DDC describes sample-handling problems that can require recollection. Only the laboratory can explain why it has requested another sample in an individual case.
Ask exactly what is needed
Request the participant involved, the replacement materials required and the instructions for connecting the new sample to the existing case. Ask whether to wait for a new kit or use another approved process. Do not send an unregistered replacement without the laboratory’s direction.
Confirm timing and any charges
Ask when processing can restart, whether the earlier estimate still applies and whether any cost is associated with the new collection. Do not assume that a recollection policy quoted for a different product or company is part of your order. Save the response with your case reference.
Describe the concern without guessing
When you believe something went wrong during collection, tell the laboratory what happened plainly. For example, describe a damaged package or an uncertainty about which envelope was used. Do not diagnose contamination yourself or conclude that an unexpected family relationship is the reason for a replacement request.
Keep the two support channels separate
Use retail support for the original shipment or purchase, and laboratory support for specimen suitability and case instructions. Do not email samples or reports to the store. The best next step is a clear, documented recollection plan—not another unrelated purchase or an attempt to interpret the missing result.
Sources and further reading
Educational content prepared with AI assistance and editorial source review; it is not presented as professionally medically reviewed. Ask the laboratory about your individual case. Our editorial policy.