OUTSOURCE
Aldosterone/Plasma Renin Direct ratio (B175))
Also Known As:
Aldosterone Renin Ratio (ARR)
About This Test
This ratio can be used as a screening test in cases of severe hypertension. The ratio allows detection of cases of Primary Aldosteronism in normokalemic patients.
Test Parameters (1)
- ALDOSTERONE/PLASMA RENIN DIRECT RATIO
Home Collection
✓ Available
Reports Available In
2 Days
Preparation / Prerequisite
2 mL (1 mL min.) serum from 1 SST AND 3 mL (2.5 mL min.) plasma from 1 Lavender Top (EDTA) tube. Collect blood between 8.00-10.00 am. Patient should be ambulatory / upright 2 hours prior to sampling. Separate plasma in a plastic transport vial and freeze. Ship frozen. DO NOT THAW. Overnight fasting is preferred.
Frequently Asked Questions
Outsourced test are being done from Dr. Lal Path Lab. Charges and reporting time is same as of Dr. Lal Path Labs.
Patient should be ambulatory / upright 2 hours prior to sampling. Drug interactions to be noted: Potassium wasting diuretics, Spironolactone, Eplerenone, Amiloride and Triamterene should be discontinued at least for 4 weeks; Adrenergic blockers, Clonidine, Methyldopa, NSAIDs, Angiotensin-converting enzyme inhibitors, Angiotensin receptor blockers, Renin inhibitors and Dihydropyridine calcium channel antagonists should be discontinued for 2 weeks. If necessary to maintain hypertension control, patients should be treated with other antihypertensive medications like Verapamil slow-release, Hydralazine, Prazosin, Doxazosin & Terazosin that have lesser effects on Plasma renin & aldosterone levels. Any change in medication should be done in consultation with treating physician.
Aldosterone / Plasma Renin (Direct) Ratio (ARR) is important because it is the best screening test for primary hyperaldosteronism, a common and treatable cause of secondary hypertension.
TAT Policy
The Turnaround Time (TAT) depends on the following factors:
- Registration date and time
- Type of scan or test
- Scan time or sample collection time
In uncommon circumstances, TAT may be delayed due to test complexity or reasons beyond our control. You will be informed of the estimated TAT at the time of registration.
