Contraindications - (Absolute in italics) -
Small hyperechoic kidneys (less than 9 cm), which are generally indicative of chronic irreversible disease
Solitary native kidney
Multiple, bilateral cysts or a renal tumor
Uncorrectable bleeding diathesis
Severe hypertension, which cannot be controlled with antihypertensive medications
Hydronephrosis
Active renal or perirenal infection
Anatomic abnormalities of the kidney which may increase risk (see above)
Skin infection over the biopsy site
An uncooperative patient
Ref - Clinical competence in percutaneous renal biopsy. Health and Public Policy Committee. American College of Physicians. PMID 3341661
and UpToDate.