Section 79.67 - Proof of chronic renal disease(a) In determining whether a claimant developed chronic renal disease following pertinent employment as an ore transporter, the Assistant Director shall resolve all reasonable doubt in favor of the claimant. A conclusion that a claimant developed chronic renal disease must be supported by medical documentation.(b) A claimant or beneficiary may submit any of the following forms of medical documentation in support of a claim that the claimant contracted chronic renal disease. (1) Pathology report of tissue biopsy;(2) If laboratory or radiographic tests exist:(i) Abnormal plasma creatinine values;(ii) Abnormal glomerular filtration rate (by either measured creatinine or iothalamate clearance or calculated by MDRD equation); and(iii) Renal tubular dysfunction as evidenced by:(A) Glycosuria in the absence of diabetes mellitus;(B) Proteinuria less than one gram daily without other known etiology; or(C) Hyperphosphaturia, aminoaciduria, B-2 microglobinuria or alkaline phosphaturia or other marker of proximal tubular injury; or(iv) Radiographic evidence of chronic renal disease;(4) Physician summary report;(5) Hospital discharge summary report;(6) Hospital admitting report; or(7) Death certificate, provided that it is signed by a physician at the time of death.