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Amino Acid, Plasma

Test Code:

BC6010

Synonym(s):

 

Specimen Container

Lithium heparin tube
(To be obtained from DPLM Reception, after office hour call extension 1383)

Specimen Requirement

Whole Blood
1 mL

Specimen Storage / Transport

Send specimen directly to the laboratory. Specimen should be separated within 1 hour of sampling.
Please send with a separate ice pack.

Method

 

Orderable as STAT?

For URGENT analysis, contact the Biochemical Genetics lab on 6394 8728 or the Lead Scientist on 8388 8741 to discuss.

Turn Around Time

5 working days

Reference Value(s)

Plasma Amino Acids Reference Range (µmol/L)

  < 7 days 7 days-6m 6m-2years 2-10 years 10-17 years >17 years
Taurine 20 269 25 192 21 138 26 157 20 106 21 144
Aspartate 6 49 6 28 6 22 6 23 6 12 6 23
Threonine 55 295 55 354 36 264 43 200 56 186 45 199
Serine 66 228 73 255 55 221 63 205 73 185 60 171
Asparagine 22 92 19 90 17 97 22 97 25 87 28 87
Glutamate 13 178 21 208 12 130 10 91 7 95 11 142
Glutamine 312 964 304 897 296 713 323 695 331 727 318 823
Glycine 150 502 105 397 88 361 102 409 128 356 103 405
Alanine 138 625 144 651 101 565 123 573 143 590 155 564
Citrulline 7 32 9 48 7 48 10 51 11 53 11 53
Valine 60 227 76 279 86 371 105 363 117 315 91 303
Cystine 14 62 12 70 12 54 13 56 20 66 25 89
Methionine 10 51 14 63 9 48 11 45 12 38 11 44
Isoleucine 6 72 15 106 23 142 23 130 32 105 24 108
Leucine 29 150 44 188 43 233 51 220 63 172 43 174
Tyrosine 34 141 26 165 25 134 30 124 29 103 32 98
Phenylalanine 31 88 27 99 32 110 33 98 33 95 39 95
Ornithine 19 159 23 202 16 114 18 112 25 108 30 142
Lysine 80 275 73 328 54 275 75 249 86 244 93 256
Histidine 39 104 35 108 38 107 44 105 40 98 37 97
Arginine 10 109 25 137 22 121 23 144 31 140 30 143
Proline 84 428 82 346 57 373 59 316 68 299 61 332

Testing Laboratory Location

KKH

Laboratory

Biochemical Genetics Lab

Contact Number

6394 8728

Day and Time Performed

Mon – Fri: 0900 hrs – 1800 hrs
Last specimen receipt time is at 1730 hrs.

Orderable on CPOE?

Yes

Downtime Form

Additional Information

​Useful For
  • Detecting disorders such as phenylketonuria(PKU), tyrosinaemia, maple syrup urine disease(MSUD), cystinuria, non-ketotic hyperglycinaemia and the urea cycle disorders.
  • Monitoring the efficacy of treatment in patients with these disorders, as well as patients on low protein diets for other reasons (eg. those with organic acidaemias).
​Clinical Indication
  • ac​ute life-threatening episode
  • failure to thrive
  • recurrent vomiting
  • neurological deterioration
  • hyperammonaemia
  • lethargy
  • metabolic acidosis
  • testing or following therapy for a specific inborn error of metabolism (PKU, MSUD, tyrosinemia, etc.).
​Interpretation ​A detailed interpretation requires the overview of results and correlation to available clinical information. Further steps such as additional biochemical and in vitro studies (enzyme & molecular analysis) may be needed to confirm and provide differential diagnosis of the disorders.
  
For URGENT analysis, contact the Biochemical Genetics laboratory at 6394 8728 or the Lead Scientist at 8388 8741 to discuss.
 
If sent after office hours, plasma will be separated and stored in Clinical Laboratory -20°C freezer.

Change History Notes

Others

Keywords

Amino Acid, plasma AA plasma  BC6010
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