Test Code 274 Parathyroid Hormone (PTH), Intact with Minerals
Additional Codes
ALAB: PTHMIN
PowerChart: PTH Intact with Minerals
Specimen Requirement
0.5 mL serum or plasma is required.
Additional Specimen Collection Information
Collect blood in a lithium heparin, green-top, red-top. PST and SST (gel tubes) are acceptable.Serum or plasma should be separated from contact with the cells within 2 hours of collection. Specimens not centrifuged within 4 hours of collection may be rejected. Refrigerate the specimen if unable to assay within 8 hours of collection. Samples with ≥3+ lipemia must be cleared prior to analysis.
Useful For
Diagnosis and differential diagnosis of hypercalcemia
Diagnosis of primary, secondary, and tertiary hyperparathyroidism
Diagnosis of hypoparathyroidism
Monitoring end-stage renal failure patients for possible renal osteodystrophy
Performance
Testing is performed Monday through Sunday.
Typically completed the same day the specimen arrives at the testing site.
CPT Code Information
83970: Chemistry: Parathormone (parathyroid hormone)
82310: Chemistry: Calcium, total
84100: Chemistry: Phosphorus inorganic (phosphate)
82565: Chemistry: Creatinine; blood
LOINC Code Information
2731-8 Parathyrin.Intact [Mass/Volume] In Serum Or Plasma
Test Method
PTH: Two-Site Immunoenzymatic ("Sandwich") Assay; Beckman
Calcium: Ion Specific Electrode; Beckman
Phosphorus: Timed Endpoint Method; Beckman
Creatinine: Jaffe Rate; Beckman
GFR: Calculated
Reference Values
PTH: 15-65 pg/mL
Calcium: 8.5-10.5 mg/dL
- Critical Values:
- Low: < 6.0 mg/dL
- High: > 13.0 mg/dL
Phosphorus: 2.0-4.5 mg/dL
Creatinine: 0.5-1.5 mg/dL
GFR: ≥ 60 mL/min/1.73m2