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HelpTest Code AACSF Amino Acids, Quantitative, Spinal Fluid
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
CSFAdditional Testing Requirements
This test should be ordered in conjunction with AAQP / Amino Acids, Quantitative, Plasma. The specimens for both tests (AAQP / Amino Acids, Quantitative, Plasma and this test) should be collected at the same time.
Necessary Information
1. Patient's age is required.
2. Include family history, clinical condition (asymptomatic or acute episode), diet, and drug therapy information
Specimen Required
Container/Tube: Sterile vial
Specimen Volume: 0.2 mL
Collection Instructions: Collect specimen from second collection vial.
Specimen Minimum Volume
0.1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| CSF | Frozen | 14 days |
Reference Values
|
Amino Acid |
Age groups |
|||
|
≤31 days |
32 days-23 months |
2-18 years |
≥19 years |
|
|
Taurine (Tau) |
8-28 |
4-13 |
4-10 |
3-9 |
|
Asparagine (Asn) |
7-25 |
5-17 |
4-12 |
5-14 |
|
Serine (Ser) |
43-127 |
37-87 |
22-57 |
18-58 |
|
Hydroxyproline (Hyp) |
<12 |
<8 |
<3 |
<3 |
|
Glycine (Gly) |
<60 |
<27 |
<20 |
<28 |
|
Glutamine (Gln) |
447-1547 |
384-716 |
375-770 |
452-1283 |
|
Aspartic Acid (Asp) |
<12 |
<12 |
<12 |
<12 |
|
Ethanolamine (EtN) |
11-152 |
6-41 |
7-25 |
6-24 |
|
Histidine (His) |
19-63 |
12-32 |
9-26 |
12-36 |
|
Threonine (Thr) |
35-212 |
19-89 |
13-51 |
13-57 |
|
Citrulline (Cit) |
<6 |
<5 |
<4 |
<4 |
|
Sarcosine (Sar) |
<21 |
<21 |
<21 |
<21 |
|
Beta-alanine (bAla) |
<17 |
<17 |
<17 |
<17 |
|
Alanine (Ala) |
20-92 |
18-69 |
16-54 |
22-80 |
|
Glutamic Acid (Glu) |
<12 |
<4 |
<3 |
<2 |
|
1-Methylhistidine (1MHis) |
<5 |
<1 |
<1 |
<3 |
|
3-Methylhistidine (3MHis) |
<4 |
<1 |
<3 |
<5 |
|
Argininosuccinic Acid (Asa) |
<4 |
<4 |
<4 |
<4 |
|
Homocitrulline (Hcit) |
<1 |
<1 |
<1 |
<1 |
|
Arginine (Arg) |
7-37 |
11-36 |
13-30 |
14-32 |
|
Alpha-aminoadipic Acid (Aad) |
<2 |
<2 |
<2 |
<2 |
|
Gamma-amino-n-butyric Acid (GABA) |
<10 |
<10 |
<10 |
<10 |
|
Beta-aminoisobutyric Acid (bAib) |
<1 |
<1 |
<1 |
<1 |
|
Alpha-amino-n-butyric Acid (Abu) |
<21 |
<7 |
<5 |
<10 |
|
Hydroxylysine (Hyl) |
<1 |
<1 |
<1 |
<1 |
|
Proline (Pro) |
<14 |
<4 |
<4 |
<2 |
|
Ornithine (Orn) |
<32 |
<15 |
<12 |
<15 |
|
Cystathionine (Cth) |
<4 |
<1 |
<1 |
<2 |
|
Cystine (Cys) |
<3 |
<3 |
<3 |
<3 |
|
Lysine (Lys) |
16-67 |
17-41 |
13-45 |
23-54 |
|
Methionine (Met) |
<19 |
<7 |
<5 |
<12 |
|
Valine (Val) |
16-83 |
10-36 |
10-27 |
13-52 |
|
Tyrosine (Tyr) |
<70 |
<22 |
<16 |
<65 |
|
Isoleucine (Ile) |
2-30 |
2-14 |
3-11 |
3-17 |
|
Leucine (Leu) |
14-72 |
9-25 |
8-23 |
10-53 |
|
Phenylalanine (Phe) |
9-49 |
7-18 |
5-18 |
8-23 |
|
Tryptophan (Trp) |
<14 |
<14 |
<14 |
<14 |
|
Allo-isoleucine (AlloIle) |
<2 |
<2 |
<2 |
<2 |
All results reported in nmol/mL
Day(s) Performed
Monday through Friday
CPT Code Information
82139