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HelpTest Code LAB3407 Pregnenolone, Post Stim
Clinical System Name
Pregnenolone
Sample Requirements
Specimen: Whole Blood
Container(s): Gold SST, Red, Lavender/EDTA, Dark Green/Sodium Heparin, or Lt. Green/Lithium Heparin Microtainer(s)
Preferred Vol: 2.0 mL
Minimum Vol: 1.0 mL
Note: Send to Main Lab ASAP.
Processing Instructions
Reject due to: Refrigerated or room temperature specimens.
Spin: Y
Aliquot: Y
Temp: -20 C
Storage location: CRITICAL FROZEN. Separate within TWO hours of collection. Make two aliquots of 0.25 - 0.5 mL serum or plasma each then freeze promptly.
Off-site collection: Separate serum or plasma from cells within TWO hours of collection. CRITICAL FROZEN.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Room temp |
Unacceptable |
| Refrigerated | Unacceptable | |
| Frozen |
6 m |
Availability
| STAT | Performed | TAT |
|---|---|---|
| N | M - F | 1 - 4 d |
Performing Laboratory
ARUP Laboratories
500 Chipeta Way
Salt Lake City, UT 84108-1221
Phone Number: (800) 522-2787
Department
Department: Send Outs
Phone Number: (206) 987-2563
Methodology
Method: Quantitative High Performance Liquid Chromatography-Tandem Mass Spectrometry
Analytical Volume: 0.25 mL per Container
Limitations:
Reference Range
| 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 |
CPT Codes
84140
Send Out Instructions
| Reference Test Name: | Pregnenolone by LC-MS/MS, Serum or Plasma |
| Reference Lab Test Code: | |
| Instructions: |
Send out Monday through Friday with the ARUP courier. |