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Pregnenolone by LC-MS/MS, Serum or Plasma
Ordering Recommendation
New York DOH Approval Status
Specimen Required
Serum separator tube. Also acceptable: Plain red, lavender (EDTA), pink (K2EDTA), or green (sodium or lithium heparin).
Specimen Preparation: Separate serum or plasma cells ASAP or within 2 hours of collection. Transfer 0.5 mL serum or plasma in two ARUP Standard Transport Tubes and freeze immediately. (Min: 0.25 mL/container)
CRITICAL FROZEN. Additional specimens must be submitted when multiple tests are ordered.
Refrigerated or room temperature specimens.
After separation from cells: Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 6 months
Methodology
Quantitative High Performance Liquid Chromatography-Tandem Mass Spectrometry
Performed
Mon-Fri
Reported
1-5 days
Reference Interval
| Age |
Female |
Male |
|---|---|---|
| 6-12 months | 13-327 ng/dL | 13-327 ng/dL |
| 13-23 months | 12-171 ng/dL | 12-171 ng/dL |
| 2-4 years | 15-125 ng/dL | 10-125 ng/dL |
| 5-6 years | 13-191 ng/dL | 10-156 ng/dL |
| 7-9 years | 14-150 ng/dL | 13-205 ng/dL |
| 10-12 years | 19-220 ng/dL | 15-151 ng/dL |
| 13-15 years | 22-210 ng/dL | 18-197 ng/dL |
| 16-17 years | 22-229 ng/dL | 17-228 ng/dL |
| 18 years and older | 15-132 ng/dL | 23-173 ng/dL |
| Tanner Stage I | 15-171 ng/dL | 13-156 ng/dL |
| Tanner Stage II | 22-229 ng/dL | 12-143 ng/dL |
| Tanner Stage III | 34-215 ng/dL | 16-214 ng/dL |
| Tanner Stage IV-V | 26-235 ng/dL | 19-201 ng/dL |
Interpretive Data
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Laboratory Developed Test (LDT)
Note
Hotline History
Hotline History
CPT Codes
84140
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 0092334 | Pregnenolone | 2837-3 |
