Renin activity is the measure of the amount of renin in the blood
What is Renin Activity?
Renin activity measures the activity of the plasma enzyme renin. Renin plays a huge role in the regulation of blood pressure, thirst and urine output in a body. Renin activity test is most frequently performed in the evaluation of patients with hypertension.the following section evaluates the reasons why renin activity test is suggested1.
Why is Renin Activity suggested?
Renin activity test is suggested for the following diagnosis:
- Primary aldosteronism.
- To measure the adequacy of steroid substitution.
How is Renin Activity performed2?
Following is the procedure for renin activity test:
- A blood sample of is taken for the test.
- Alcohol is used to clean the skin.
- The technician wraps an elastic band above the elbow so that the veins can be easily seen.
- The needle is injected near your elbow or the back of your hand and blood is collected in a plain tube attached to the needle. The needle is ejected from the skin.
The blood sample is labelled and sent for analysis.
What are the parameters measured in Renin Activity?
Normal values in a renin activity test range from 1.9 to 3.7 ng/ml/hou2.
Preparation before performing Renin Activity
The patient will be asked to withhold intake of particular medication before the renin activity test. The patient will also be advised to take a normal balanced low sodium diet 3 days before the test.
Post-care after Renin Activity
No particular post-care is required after renin activity test but it is advised to inform your doctor if you feel abnormal after the test.
Sample types in Renin Activity
Sample type is blood sample in renin activity test.
Side effects/risks of Renin Activity
Following are the side-effects of a renin activity test:
- Excessive bleeding.