Yale New Haven Hospital

Department of Laboratory Medicine
Test Directory

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Phenylalanine/tyrosine, blood spot

Lab Section: 

Chemistry

 

Lab Location: 

Main Lab

Test ID: 

LAB3351

 

Methodology: 

LC MS/MS

Schedule: 

Wednesday

Reported: 

1-7 days

Specimen Requirements: 

Collection: 5.0 Spots Blood spotted onto Whatman Protein Saver 903 Paper
Pediatric volume: 2 Spots.

 

Reference Interval: 

See Interpretation

Tests in this Panel: 

Test Name

Reference Interval

Tyrosine mg/dL BS [LRR19145]

Phenylalanine mg/dL BS [LRR19144]

Phenylalanine [LRR11107]

Age Limit

Sex

Normal Range

0 - 3 Months

Any

25

74 umol/L

3 Months - 6 Years

Any

34

101 umol/L

6 Years - 18 Years

Any

39

76 umol/L

18 Years - 999 Years

Any

42

74 umol/L

Tyrosine [LRR11106]

Age Limit

Sex

Normal Range

0 - 3 Months

Any

13

91 umol/L

3 Months - 6 Years

Any

24

105 umol/L

6 Years - 18 Years

Any

43

88 umol/L

18 Years - 999 Years

Any

26

78 umol/L

CPT Code(s): 

84030

Last Changed: 

09/04/2016 14:59:21

Last Reviewed: 09/15/2017