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Classification: Low
Corrected calcium 8.0 is low (hypocalcemia). In CKD this usually reflects vitamin D deficiency and high phosphorus (secondary hyperparathyroidism).
Calcium balance in CKD is complex — it's influenced by PTH, vitamin D, and phosphorus. Always use albumin-corrected calcium in kidney disease.
Blood test; corrected value = measured calcium + 0.8 × (4 − albumin).
Reference: KDIGO CKD-MBD guideline; Payne correction formula • Normal range: 8.5-10.5 mg/dL (corrected for albumin)
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This content is a general reference, not medical advice, a diagnosis, or a treatment plan. Do not change your diet, fluids, medicines, or dialysis plan without your nephrologist or renal dietitian. Individual recommendations depend on your labs, medications, conditions, and care plan.