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General
Synonym/Acronym:
Parathormone, PTH, intact PTH, whole molecule PTH.
Common Use:
To assist in the diagnosis of parathyroid disease and disorders of calcium balance. Also used to monitor patients receiving renal dialysis.
Specimen:
Serum collected in a gold-, red-, or red/gray-top tube. Specimen should be transported tightly capped and in an ice slurry.
Normal Findings:
(Method: Immunoassay)
| Age | Conventional Units | SI Units (Conventional Units × 1) |
|---|---|---|
| Cord blood | Less than 3 pg/mL | Less than 3 ng/L |
| 2–20 yr | 9–52 pg/mL | 9–52 ng/L |
| Adult | 10–65 pg/mL | 10–65 ng/L |
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