Aldosterone /Renin ratio
Patient Preparation
Correct Hypokalemia. (minimum potassium level should be 4mmol/L)
Encourage patient to liberalize (rather than restrict) sodium intake.
| Withdraw at least 4 weeks | Withdraw at least 2 weeks | Antihypertensives that can be used |
| Spironolactone | Beta-adrenergic blockers Eg : atenalol, propane lol | Verapamil |
| Amiloride | Central alpha-2-agonists Eg : Clonidine, alpha-methyldopa | Hydralazine |
| Triameterene | NSAIDs | Prazosinhydrochloride |
| Potassium-wasting diuretics | ACE Inhibitors | Doxazosin methylate |
| Products derived from liquorice root | Angiotensin receptor blockers | Terazosin hydrochloride |
| Eplerenone | Renin Inhibitors | |
| Dihydropyridine calcium channel blockers Eg : Amlodipine, Nifidipine | ||
| Estrogen containing contraceptives |
How to collect the specimen and transport it
Reserve a date contacting the main laboratory (Room 17).
Test is done at Dialysis Unit lab (DU Lab) at 8.30a.m
Overnight fasting is preferred but not mandatory.
Patient should be upright (Standing/sitting/walking – avoid lying down) for 2 hours ( Eg : 6am – 8am), then sit and take rest for 15-20 mins.
Collect report at the main laboratory ( Room 17 ) from 5 days.
For In Ward patients :
| TUBE | EDTA tube (Purple Top) |
| Volume | Collect up to the mark |
| Transport | In room temperature immediately to the DU lab |