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CLINICALPATHOLOGY-236
PARATHYROID HORMONE (PTH) and CALCIUM relationship: in PRIMARY HYPERPARATHYROIDISM, what is the pattern of calcium and PTH?
A. Low calcium + high PTH (secondary hyperparathyroidism pattern)
B. HIGH CALCIUM + INAPPROPRIATELY HIGH OR HIGH-NORMAL PTH (PTH should be suppressed if calcium is high but is not — autonomous PTH secretion)
C. Normal calcium + low PTH
D. Low calcium + low PTH
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