Test ID: ALDNA
Aldosterone with Sodium, Urine
Specimen Type 
Describes the specimen type needed for testing
Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.
Collection Container/Tube: Plastic, 60-mL urine bottle
Submission Container/Tube: Plastic, 10-mL urine tube (Supply T068) and plastic, 6-mL tube (Supply T465)
Specimen Volume: 16 mL
Collection Instructions:
1. Collect urine for 24 hours.
2. Add 25 mL of 50% acetic acid as preservative at start of collection. Use 15 mL of 50% acetic acid for children <5 years old. This preservative is intended to achieve a pH of between approximately 2 and 4.
3. Place 11 mL of well mixed, 24-hour urine in plastic, 10-mL urine tube (Supply T068) and label as Aldosterone.
4. Place 5 mL of well mixed, 24-hour urine in plastic, 6-mL tube (Supply T465) and label as Sodium.
Additional Information:
1. 24-Hour volume is required.
2. See Urine Preservatives for multiple collections and Renin-Aldosterone Studies for more detailed instructions in Special Instructions.
Urine Preservative Collection Options
| Ambient | Yes |
| Refrigerated | Yes |
| Frozen | Yes |
| 6N HCl | No |
| 50% Acetic Acid | Preferred |
| Na2CO3 | No |
| Toluene | Yes |
| 6N HNO3 | No |
| Boric Acid | Yes |
| Thymol | Yes |
Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.
Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected
| Hemolysis | NA |
| Lipemia | NA |
| Icterus | NA |
| Other | NA |
Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.
| Specimen Type | Temperature | Time |
|---|---|---|
| Urine | Refrigerated (preferred) | 7 days |
| Ambient | 7 days | |
| Frozen | 7 days |
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