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PTH, INTACT
MessageFor Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.
Test Code
PTH
Alias/See Also
76774;
INTACT PTH
INTACT PTH
CPT Codes
83970
Preferred Specimen
2 mL Serum
Minimum Volume
1 mL for Adults
0.5 mL for infants
0.5 mL for infants
Other Acceptable Specimens
Plasma from K3EDTA (lavender top) tube
Instructions
Avoid hemolysis. Invert a minimum of 5 times then allow to clot in an upright position for 30 minutes. Centrifuge the SST for at least 10 minutes. Keep tightly stoppered
Transport Container
SST (speckled top) tube
Transport Temperature
Refrigeraed
Specimen Stability
Room Temperature = serum - 4 hours
plasma 8 hours
Refrigerated = serum 48 hours
plasma - 72 hours
Frozen = 4 months
plasma 8 hours
Refrigerated = serum 48 hours
plasma - 72 hours
Frozen = 4 months
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis
Methodology
Immunochemiluminometric Assay (PTH)
Setup Schedule
Tuesday - Saturday
Report Available
2 days
Clinical Significance
Useful in making the diagnosis of primary hyperparathyroidism, secondary hyperparathyroidism, and a differential diagnosis of hypercalcemia.
Performing Laboratory
CompuNet Clinical Laboratories, LLC
2308 Sandridge Drive
Moraine, OH 45439
Last Updated: August 11, 2022