The PTH, Intact & Calcium
This discount blood lab test is used to determine the cause of calcium imbalances; to evaluate parathyroid function; to diagnose and differentiate between primary, secondary, and tertiary hyperparathyroidism; to diagnose hypoparathyroidism; during surgery for hyperparathyroidism to confirm removal of the gland(s) causing the problem.
PTH: Immunoassay (IA) • Calcium: Spectrophotometry (SP)
|Age||Male (mg/dL)||Female (mg/dL)|
Parathyroid Hormone, Intact
|6-9 Years||9-59 pg/mL|
|10-13 Years||11-74 pg/mL|
|14-17 Years||9-69 pg/mL|
|>17 Years||14-64 pg/mL|
|Hypoparathyroidism||Low or Low Normal||Low|
|Primary||Normal or High||High|
|Secondary||High||Normal or Low|
|Hypercalcemia||Low or Low Normal||High|
The assay is useful in making the diagnosis of primary hyperparathyroidism, secondary hyperparathyroidism, and a differential diagnosis of hypercalcemia. The assay helps in distinguishing hypercalcemia cause by either primary hyperparathyroidism or malignant disease.
Immunoreactive PTH,Sandwich PTH Assay,PTH Whole Molecule,Intact Hormone,Monogram
The lab estimates that the testing will take 3 to 7 business days.
Quest test code 8837
Please be advised, that our services are strictly self pay and are not eligible for submission as a claim to your health insurance provider. However, you can submit the receipt for reimbursement to many Flexible Spending and Health Savings Accounts for reimbursement.
Test code(s) 8837
This test is used to:
Intact PTH is the biologically active form of parathyroid hormone. It acts to increase circulating calcium, decrease circulating phosphorous, and increase the active form of vitamin D [1,25(OH)2D], by mobilizing calcium from bone and retaining calcium in the kidneys.
Results observed in various conditions follow1:
No patient preparation is required.
The preferred specimen is frozen serum.
Heterophile antibodies (antibodies to animal immunoglobulins) present in the patient’s blood could cause anomalous results.
PTH values vary from one method to the next. You can compare values generated by different methods by comparing where each result falls within the respective method’s reference interval. Calcium values may vary among methods as well and can be compared in the same manner.
The following reference may be helpful:
Broussard JH, Lepage R, Cardinal H, et al. Influence of glomerular filtration on non-(1-84) parathyroid hormone (PTH) detected by intact PTH assays. Clin Chem. 2000;46:697-703.
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