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تعداد آیتم قابل مشاهده باقیمانده : 3 مورد
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Differential diagnosis of primary hyperparathyroidism, typical laboratory findings

Differential diagnosis of primary hyperparathyroidism, typical laboratory findings
Disease Laboratory test
Intact PTH Serum calcium Urinary calcium (mg/24 hours) Ca/Cr clearance 25OHD
PHPT High-normal or elevated Elevated Normal or elevated 0.01 to 0.05 (>0.02) Normal, low-normal, or low
Malignancy Low (<20 pg/mL) Elevated Generally high   Depends on malignancy*
FHH Normal, mildly elevated in 15 to 20 percent Elevated Generally low (<100) <0.01 Normal
PHPT with vitamin D deficiency Elevated Normal or elevated Low-normal or low (<200)   Low (<20 ng/mL)
Normocalcemic PHPT Elevated Normal Normal   Normal
Secondary hyperparathyroidism due to vitamin D deficiency Elevated Normal or low Low   Low (<20 ng/mL)
PTH: parathyroid hormone; PHPT: primary hyperparathyroidism; FHH: familial hypocalciuric hypercalcemia; 25OHD: 25-hydroxyvitamin D; Ca/Cr: calcium/creatinine.
* 25-hydroxyvitamin D is often normal in malignancy. It could be low in cases of concomitant vitamin D deficiency, due to poor dietary intake and little sun exposure. The 1,25-dihydroxyvitamin D may be elevated, depending upon the malignancy.
Graphic 71910 Version 4.0

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