Parathormone (parathyroid hormone)
CPT4 code
Name of the Procedure:
Parathormone (Parathyroid Hormone) Test
Common name(s): PTH Test, Parathyroid Hormone Assay
Summary
The Parathormone test measures the level of parathyroid hormone (PTH) in the blood. PTH helps regulate calcium, phosphorus, and vitamin D levels in the body.
Purpose
The PTH test is primarily used to:
- Diagnose and differentiate between various types of hyperparathyroidism (overactive parathyroid glands) and hypoparathyroidism (underactive parathyroid glands).
- Determine the cause of abnormal calcium levels.
- Monitor the effectiveness of treatment for parathyroid disorders.
Indications
The PTH test is indicated for patients with:
- Abnormal calcium levels (either high or low).
- Symptoms suggesting a parathyroid disorder, such as bone pain, kidney stones, excessive urination, or unexplained fatigue.
- Chronic kidney disease, which can influence PTH levels.
Preparation
- Fasting is typically not required before a PTH test.
- Patients should inform their healthcare provider about all medications, as some may influence PTH levels.
- Blood samples should ideally be taken in the morning when PTH levels are highest.
Procedure Description
- A healthcare professional will clean the area, usually the inner elbow, with an antiseptic wipe.
- A tourniquet is applied to the upper arm to make the veins more visible.
- A needle is inserted into a vein, and blood is drawn into a vial.
- The needle is removed, and pressure is applied to the puncture site to stop any bleeding.
- The blood sample is sent to a laboratory for analysis.
Duration
The blood draw itself takes about 5 to 10 minutes. Overall, the process, including preparation, may take around 15 to 20 minutes.
Setting
The PTH test is typically performed in:
- A hospital's outpatient lab.
- A doctor's office.
- Specialized diagnostic clinics.
Personnel
The procedure is conducted by:
- Phlebotomists or trained nurses.
- Lab technicians analyze the blood sample.
Risks and Complications
The PTH test is generally safe, but potential minor risks include:
- Slight pain or bruising at the puncture site.
- Rarely, infection or excessive bleeding.
Benefits
The PTH test helps in accurately diagnosing and managing parathyroid and calcium-related disorders. Knowing the PTH level can guide appropriate treatments, improving the patient’s overall health.
Recovery
- The patient can resume normal activities immediately after the test.
- Apply a bandage and pressure if there is any minor bleeding.
- Patients are advised to drink plenty of fluids to replenish the blood drawn.
Alternatives
- Alternative tests may include calcium and phosphorus blood tests, vitamin D levels, and urine tests for calcium excretion.
- Imaging studies such as ultrasound or sestamibi scans may be used to evaluate parathyroid gland abnormalities.
Patient Experience
- The procedure involves minimal pain, comparable to a standard blood test.
- If anxious about needles, patients should communicate this to their healthcare provider to ensure comfort measures are taken, such as numbing the area or using a smaller needle.
- Any discomfort usually subsides quickly after the blood draw.