PTH (Parathyroid Hormone) Intact Test
Short Name: PTH Intact
Also known as: PTH Intact, Intact PTH, Parathyroid Hormone Intact, PTH Antibody Test
PTH (Parathyroid Hormone) Intact Test test available at DNA Labs India for ₹45,000. Uses Radiobinding Assay (RBA) on Serum samples. Results in Samples will be batched for analysis. If the sample is received by the 7th of the month, the report will be issued after 2–3 weeks.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Ramarao Paidisetty
Consultant Biochemist · Reg: 21504
Last reviewed: September 7, 2026
Overview
To measure intact parathyroid hormone levels and assist in the evaluation of parathyroid disorders, calcium imbalance, and suspected autoimmune parathyroid dysfunction.
- Test Code
- 3592
- Price
- ₹45,000
- Sample Type
- Serum
- Result Time
- Samples will be batched for analysis. If the sample is received by the 7th of the month, the report will be issued after 2–3 weeks.
- Fasting Required
- No
- Method
- Radiobinding Assay (RBA)
Sample Collection
No special preparation is required. Inform your healthcare provider about all medications and supplements you are currently taking, as some may influence PTH levels.
Method: Venipuncture
Laboratory Analysis
A blood sample will be collected from a vein in your arm by a trained phlebotomist. The procedure takes only a few minutes.
Report Delivery
You can resume normal activities immediately after the blood draw. Apply pressure to the puncture site if needed.
Timeline: Samples will be batched for analysis. If the sample is received by the 7th of the month, the report will be issued after 2–3 weeks.
Patient Instructions
About This Test
Who Should Get This Test
To measure intact parathyroid hormone levels and assist in the evaluation of parathyroid disorders, calcium imbalance, and suspected autoimmune parathyroid dysfunction.
How to Prepare
- No fasting is required
- Sample must be collected in 1 SST
- Ship sample refrigerated or frozen
- Inform the phlebotomist if you have a history of bleeding disorders or are taking blood thinners
Doctor's Notes
Reviewed by Dr Ramarao Paidisetty — MBBS, MD (Biochemistry) · Reg. No. 21504
"A PTH result must always be interpreted with serum calcium, phosphorus, vitamin D and renal function. Isolated PTH levels cannot diagnose all parathyroid disorders without clinical correlation."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Hemolysed or lipemic sample
- Sample received in a plain tube without serum separator
- Sample stored at room temperature for more than 14 days
- Incorrectly labelled sample
Understanding Your Results
High PTH + High Calcium
High PTH + Low or Normal Calcium
Low PTH + Low Calcium
Low PTH + High Calcium
Consult an endocrinologist if you have symptoms of abnormal calcium levels, persistent bone pain, fractures, kidney stones, muscle cramps, or if you are concerned about parathyroid disease. Do not start treatment based only on a laboratory result.
Limitations
- ⚠PTH levels alone are not diagnostic and must be interpreted with serum calcium, phosphorus, vitamin D and kidney function
- ⚠The reference range may vary between laboratories and assay methods
- ⚠The radiobinding assay may differ from immunoassay methods in sensitivity and specificity
- ⚠If anti-PTH antibody-mediated autoimmune hypoparathyroidism is suspected, additional specific autoantibody testing and endocrinologist evaluation are required
Risks & Considerations
- ●Mild pain or bruising at the puncture site
- ●Dizziness or lightheadedness
- ●Rarely, infection or prolonged bleeding
Interfering Factors
- ●Medications such as lithium, cimetidine, loop diuretics and corticosteroids may affect PTH levels
- ●Circadian variation in PTH secretion may affect the result
- ●Hemolysed or lipemic samples may interfere with the assay
- ●Recent parathyroid surgery or renal failure may alter PTH interpretation
Frequently Asked Questions
What is the PTH (Parathyroid Hormone) Intact Test?
How much does the PTH antibody test cost at DNA Labs India?
Is fasting required for the PTH Intact test?
What sample type is needed for the PTH test?
How long will my PTH test report take?
What symptoms can indicate the need for a PTH test?
What do high PTH levels mean?
What do low PTH levels mean?
What other tests are typically done with PTH?
Is home sample collection available for the PTH test?
What is the method used for the PTH test?
Can PTH testing diagnose autoimmune parathyroid disorders?
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