| 28th August 2024 | Collection & Request Instructions |
Collection Requirements for both or either tests
Collect into 4 mL EDTA tubes at Room Temperature. Do not collect on ice
If both Renin and Aldosterone are requested together, they can be collected into the same EDTA tube
Whole blood or plasma stored at 4 Deg C is not suitable
Add-on tests for Aldosterone can be done on samples which have been previously collected and stored at 4 Deg C, for 4 days. | Collection Requirements
Collect into 4 mL EDTA tubes at Room Temperature. Do not collect on ice.
If both Renin and Aldosterone are requested together, they can be collected into the same EDTA tube.
If Aldosterone and cortisol are requested together (but not renin), then these can be collected in the same EDTA tube, or the same serum tube.
Whole blood stored at 4 Deg C is not suitable, separated plasma may be suitable.
Add-on tests for Aldosterone can be done on serum samples which have been previously collected and stored at 4 Deg C, for 4 days. |
| Processing Instructions | aldosterone alone is not appropriate as an initial investigation. Used as part of protocols available on consultation
Serum/Plasma aldosterone has substantial physiological variation and interpretation may be difficult.
Plasma renin activity is a more useful initial test in the evaulation of hypertension. | Aldosterone alone is not appropriate as an initial investigation. Used as part of protocols available on consultation.
Serum/Plasma aldosterone has substantial physiological variation and interpretation may be difficult.
Plasma renin is a more useful initial test in the evaulation of hypertension. |
| 13th August 2024 | Collection & Request Instructions |
Collection Requirements for both or either tests
Collect into 4 mL EDTA tubes at Room Temperature. Do not collect on ice
If both Renin and Aldosterone are requested together, they can be collected into the same EDTA tube
Whole blood or plasma stored at 4 Deg C is not suitable
Add-on tests for Renin and Aldosterone should not be done on samples which have been previously collected or stored at 4 Deg C |
Collection Requirements for both or either tests
Collect into 4 mL EDTA tubes at Room Temperature. Do not collect on ice
If both Renin and Aldosterone are requested together, they can be collected into the same EDTA tube
Whole blood or plasma stored at 4 Deg C is not suitable
Add-on tests for Renin and Aldosterone should not be done on samples which have been previously collected or stored at 4 Deg C |
| Collection & Request Instructions |
Collection Requirements for both or either tests
Collect into 4 mL EDTA tubes at Room Temperature. Do not collect on ice
If both Renin and Aldosterone are requested together, they can be collected into the same EDTA tube
In the laboratory, spin and separate the plasma immediately. Plasma is stable at Room Temperature if analysis is performed on the same day
If the specimen arrives on the weekend or after hours, or if the specimen is referred from an external laboratory, freeze the plasma
EDTA plasma samples from external laboratories should be stored and transported frozen
Whole blood or plasma stored at 4 Deg C is not suitable
Add-on tests for Renin and Aldosterone should not be done on samples which have been previously collected or stored at 4 Deg C |
Collection Requirements for both or either tests
Collect into 4 mL EDTA tubes at Room Temperature. Do not collect on ice
If both Renin and Aldosterone are requested together, they can be collected into the same EDTA tube
In the laboratory, spin and separate the plasma immediately. Plasma is stable at Room Temperature if analysis is performed on the same day
If the specimen arrives on the weekend or after hours freeze the plasma
EDTA plasma samples from external laboratories should be stored and transported frozen
Whole blood or plasma stored at 4 Deg C is not suitable
Add-on tests for Renin and Aldosterone should not be done on samples which have been previously collected or stored at 4 Deg C |
