19 days
Mass spectrometry (MS)
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Adrenal steroid precursor. Used in evaluating mineralocorticoid hypertension or congenital adrenal hyperplasia.
Serum
3 mL
Red-top tube, gel-barrier tube, lavender-top (EDTA) tube or green-top (heparin) tube
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
Strictly frozen, requires own sample container
| Temperature | Period |
|---|---|
| Frozen | 2 years |