Phenylalanine + Tyrosine
Test Mnemonic
PHETYR
CPT Codes
- 84510 - QTY (1)
- 84030 - QTY (1)
Includes
- Phenylalanine
- Tyrosine
Performing Laboratory
Cleveland Clinic Laboratories
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL | Plasma | Sodium or Lithium heparin (Green) | Frozen | Separate plasma from cells ASAP. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | Unacceptable |
| Refrigerated | 24 hours |
| Frozen | 2 weeks |
Days Performed
Varies
Turnaround Time
2 - 10 days
Methodology
| Name | Description |
|---|---|
| Ion Exchange Chromatography |
Reference Range
| Phenylalanine | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Days | 30 Days | Normal | 38 - 137 | umol/L | 1 Months | 23 Months | Normal | 31 - 75 | umol/L | 2 Years | 18 Years | Normal | 26 - 91 | umol/L | 19 Years | 99 Years | Normal | 35 - 85 | umol/L |
| Tyrosine | |||||
| Sex | Age From | Age To | Type | Range | Range Unit |
| Months | 1 Months | Normal | 55 - 147 | umol/L | 1 Months | 24 Months | Normal | 22 - 108 | umol/L | 2 Years | 18 Years | Normal | 24 - 115 | umol/L | 18 Years | 99 Years | Normal | 34 - 112 | umol/L |
Special Info
Place specimen on ice after draw