Cholesterol Biosynthesis Intermediates
Test Mnemonic
CBINTR
CPT Codes
- 82542 - QTY (1)
Includes
- Desmosterol
- 7-Dehydrocholesterol
- Lathosterol
Performing Laboratory
Kennedy Krieger Institute
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Plasma | Sodium or Lithium heparin (Green) | Frozen | Centrifuge, aliquot and freeze ASAP. |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Plasma | EDTA (Lavender) | Frozen | Centrifuge, aliquot and freeze ASAP. |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | Unacceptable |
| Refrigerated | Unacceptable |
| Frozen | Indefinitely |
Days Performed
Tue - Fri
Turnaround Time
4 - 7 days
Methodology
| Name | Description |
|---|---|
| Gas Chromatography Mass Spectrometry (GCMS) |
Reference Range
| 7-Dehydrocholesterol | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Normal | 0.04 - 0.36 | ug/mL | |||
| Desmosterol | |||||
| Sex | Age From | Age To | Type | Range | Range Unit |
| Normal | 0.82 +/- 0.48 (SD) | ug/mL | |||
| Lathosterol | |||||
| Sex | Age From | Age To | Type | Range | Range Unit |
| Normal | 0.97 +/- 0.48 (SD) | ug/mL |
Special Info
Centrifuge, aliquot and freeze ASAP.