CAH Panel 1 (21-Hydroxylase vs 11Beta-Hydroxylase Deficiency)
| Abbrev Code: | XMISC | ||
| Order Code: | LAB4909 | Order Name: | Laboratory Miscellaneous Order |
| Methodology: | Chromatography/Mass Spectrometry | ||
| CPT Codes: | 83498 x1, 82634 x1, 82533 x1, 82157 x1, 84403 x1 | ||
| Test Includes: |
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| Turnaround Time: | Results are reported within 6-10 days | ||
| Compliance: | This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes. |
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Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 9 mL |
| Minimum\Peds Volume: | 1.4 mL |
| Container: | Red (gel) Alternate Containers: Red (no gel) |
| Causes for Rejection: | Gross hemolysis, gross lipemia, use of gel tube |
Processing and Shipping
| Specimen Processing: | Centrifuge and aliquot 3 mL, 0.6 mL minimum. |
| Shipping Instructions: | Ship at refrigerated temperature. |
| Stability: | 48 hours at room temperature; 7 days refrigerated; 28 days frozen. |
| Test Performed at or Referral Lab | Lab Sendouts (Quest Diagnostics) |
| Referral Lab number: | 15269 |
Interpretive
| Use: | CAH Panel 1 (21-Hydroxylase vs 11Beta-Hydroxylase Deficiency) - Deficiency of 21-Hydroxylase is the most frequent cause of congenital adrenal hyperplasia (accounting for ~95% of cases) and 11Beta-Hydroxylase is the second most frequent (~5% of cases). Deficiencies of these two enzymes result in the accumulation of distinct steroid precursors. |
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