Transition of Renal Patients Using AlloSure Into Community Kidney Care

Inclusion Criteria: * Participants with single kidney transplant (de-novo or re-transplant) who are ≥ 6 months and ≤ 36 months post-transplant. Participants and will need to have a draw in this time period . * Participant is willing and able to give informed consent for participation in the trial. * Male or Female, aged 12 years or older. * In the Investigator's opinion, is able and willing to comply with all trial requirements. Exclusion Criteria: * Participant who is pregnant, lactating or planning pregnancy during the trial. * Significant hepatic impairment (determined by the PI). * Scheduled elective surgery or other procedures requiring general anaesthesia during the trial. * Participant with life expectancy of less than 6 months, or inappropriate for diagnostic monitoring through regular blood sampling. * \< 6 months and \> 36 months post-transplant * Any other significant disease or disorder which, in the opinion of the Investigator, may either put the participants at risk because of participation in the trial, or may influence the result of the trial, or the participant's ability to participate in the trial. * Participants who have participated in another research trial involving an investigational product in the past 12 weeks. * Multi-organ transplant (e.g., Kidney-Pancreas).