Renin Activity, Plasma, Five Specimens
Use
The Renin Activity, Plasma, Five Specimens test is crucial in evaluating the active renin level in blood plasma, which can be indicative of conditions such as hypertension or adrenal diseases. During the testing procedure, multiple specimens are collected to track changes in renin activity over time or following physiological interventions. This helps in assessing the patient's response to certain treatments or in confirming clinical suspicions of excess or deficiency of renin.
Special Instructions
This panel is series-based and involves multiple blood draws at specified intervals. Initial blood collection is followed by administration of a treatment (e.g., medication or glucose drink), and subsequent samples are collected at intervals post-treatment. Ensure proper coordination with clinical staff to understand the specific protocols and rationale for ordering this test series. Always refer to the LabCorp Endocrine Appendix for comprehensive instructions regarding multi-specimen testing protocols.
Limitations
The test is dependent on correct timing and systematic collection of samples; deviations can cause discrepancies in renin activity measurement. Inadequate specimen handling, such as not freezing samples or improper separation, will lead to rejection and potential delays in diagnostic interpretation. This test does not determine the cause of abnormal renin levels; it should be interpreted in conjunction with other diagnostic tests and clinical findings.
Methodology
Automated Analyzer (Clinical Chemistry)
Biomarkers
LOINC Codes
- 12900-7
- 12901-5
- 12902-3
- 17515-8
- 25513-3
- 46963-5
- 17515-8
- 46963-5
- 25513-3
- 12900-7
- 12901-5
- 12902-3
Result Turnaround Time
3-5 days
Related Documents
For more information, please review the documents below
Specimen
Plasma
Volume
Not provided
Minimum Volume
Not provided
Container
EDTA tube
Collection Instructions
Collect initial tube as baseline, administer treatment, then collect remaining tubes at specified intervals.
Patient Preparation
Ensure the patient is aware of the procedure involving sequential blood draws and possible administration of medication/treatment.
Storage Instructions
Freeze samples immediately after collection to maintain integrity.
Causes for Rejection
Non-frozen sample received; non-separated sample received; non-EDTA plasma specimen; gross icterus