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Graphic Interpretation of Serum Parathyroid Hormone, Calcium, and Phosphorus Values in Primary Hyperparathyroidism Pai C. Kao, Ph.D., Edward G. Lufkin, M.D. Mayo Clinic Proceedings Volume 68, Issue 1, Pages (January 1993) DOI: /S (12) Copyright © 1993 Mayo Foundation for Medical Education and Research Terms and Conditions
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Fig. 1 Graphic display of serum phosphorus, calcium, and parathyroid hormone (PTH) values in 361 patients with surgically proven primary hyperparathyroidism. Correlation between serum calcium and PTH values is significant (r = 0.434; P = ), as shown in right half of diagram. Inverse correlation between serum calcium and phosphorus (r = −0.339; P = ) is shown in left half of diagram. Shaded boxes = normal ranges for serum phosphorus, calcium, and PTH; open triangles (on left and right halves of diagram) = a patient's phosphorus, calcium, and PTH values. ICMA PTH = PTH values determined by immunochemiluminometric assay. Mayo Clinic Proceedings , 96-97DOI: ( /S (12) ) Copyright © 1993 Mayo Foundation for Medical Education and Research Terms and Conditions
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