Pregnenolone
Test Mnemonic
PREG
CPT Codes
- 84140 - QTY (1)
LOINC ®
2837-3
Performing Laboratory
ARUP
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | SST (Gold) | Frozen, Critical | Separate serum from cells ASAP or within 2 hours of collection. Transfer 0.5 mL serum in two aliquot tubes and freeze immediately. |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | No additive (Red) | Frozen, Critical | Separate serum from cells ASAP or within 2 hours of collection. Transfer 0.5 mL serum in two aliquot tubes and freeze immediately. | |
| 1 mL | Plasma | EDTA (Lavender) | Frozen, Critical | Separate plasma from cells ASAP or within 2 hours of collection. Transfer 0.5 mL plasma in two aliquot tubes and freeze immediately. | |
| 1 mL | Plasma | Sodium or Lithium heparin (Green) | Frozen, Critical | Separate plasma from cells ASAP or within 2 hours of collection. Transfer 0.5 mL plasma in two aliquot tubes and freeze immediately. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL | Minimum: 0.25 mL per aliquot tube |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | After separation from cells: Unacceptable |
| Refrigerated | After separation from cells: Unacceptable |
| Frozen | After separation from cells: 6 months |
Days Performed
Mon - Fri
Turnaround Time
2 - 6 days
Methodology
| Name | Description |
|---|---|
| High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS) |
Reference Range
| Pregnenolone | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Male | 6 Months | 12 Months | Normal | 13 - 327 | ng/dL | Male | 2 Years | 4 Years | Normal | 10 - 125 | ng/dL | Male | 5 Years | 6 Years | Normal | 10 - 156 | ng/dL | Male | 7 Years | 9 Years | Normal | 13 - 205 | ng/dL | Male | 10 Years | 12 Years | Normal | 15 - 151 | ng/dL | Male | 13 Years | 15 Years | Normal | 18 - 197 | ng/dL | Male | 16 Years | 17 Years | Normal | 17 - 228 | ng/dL | Male | 18 Years | 99 Years | Normal | 23 - 173 | ng/dL | Male | 13 Months | 23 Months | Normal | 12 - 171 | ng/dL | Female: Tanner Stage I: 15 - 171 ng/dL | Male: Tanner Stage I: 13 - 156 ng/dL | Male: Tanner Stage II: 12 - 143 ng/dL | Male: Tanner Stage III: 16 - 214 ng/dL | Male: Tanner Stage IV-V: 19 - 201 ng/dL | Female: Tanner Stage II: 22 - 229 ng/dL | Female: Tanner Stage III: 34 - 215 ng/dL | Female: Tanner Stage IV-V: 26 - 235 ng/dL | Female | 6 Months | 12 Months | Normal | 13 - 327 | ng/dL | Female | 13 Months | 23 Months | Normal | 12 - 171 | ng/dL | Female | 2 Years | 4 Years | Normal | 15 - 125 | ng/dL | Female | 5 Years | 6 Years | Normal | 13 - 191 | ng/dL | Female | 7 Years | 9 Years | Normal | 14 - 150 | ng/dL | Female | 10 Years | 12 Years | Normal | 19 - 220 | ng/dL | Female | 13 Years | 15 Years | Normal | 22 - 210 | ng/dL | Female | 16 Years | 17 Years | Normal | 22 - 229 | ng/dL | Female | 18 Years | 99 Years | Normal | 15 - 132 | ng/dL |
Special Info
CRITICAL FROZEN. Additional specimens must be submitted when multiple tests are ordered. Unacceptable conditions: Refrigerated or room temperature specimens. This test is New York DOH approved.