Amino Acid, Urine | KK Women's and Children's Hospital

Specimen Container

Wide mouth sterile container

Specimen Requirement

Urine
3 mL

Specimen Storage/Transport

Fresh urine and no preservative. Please send with a separate ice pack.

Orderable as Urgent?

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)

Urine amino acid reference ranges in µmol/mmol creatinine

Analyte	Age
Analyte	0-1m	1-6m	6m-2yr	2-10yr	10-13yr	>13yr
TAURINE	8-226	6-89	9-159	13-230	18-176	16-160
ASPARTATE	2-12	2-16	3-12	1-9	1-9	2-7
THREONINE	20-138	17-92	14-62	9-48	8-28	7-29
SERINE	50-282	42-194	45-137	23-94	23-67	21-50
ASPARAGINE	0-84	0-58	0-36	0-30	0-18	0-23
GLUTAMINE	0-30	0-29	0-18	0-10	0-9	0-12
GLUTAMINE	52-205	63-229	62-197	31-236	20-112	20-76
PROLINE	9-213	0-130	0-14	0-9	0-9	0-9
GLYCINE	165-1097	210-743	110-445	84-362	64-165	43-173
ALANINE	62-244	62-206	36-162	17-115	21-62	16-68
CITRULLINE	0-11	0-10	0-8	0-6	0-5	0-4
VALINE	3-26	4-19	6-21	3-20	3-17	3-13
METHIONINE	7-27	6-22	7-29	3-21	3-10	2-16
CYSTINE	23-78	13-48	10-29	8-30	7-23	6-34
ISOLEUCINE	0-6	0-5	0-6	0-6	0-6	0-4
LEUCINE	3-25	4-12	3-17	3-18	3-14	2-11
TYROSINE	6-55	12-52	11-54	7-35	6-25	2-23
PHENYLALANINE	4-32	7-28	10-31	5-26	5-17	2-19
BETA AMINOISOBUTYRIC ACID	0-87	0-216	0-266	0-175	0-58	0-91
ORNITHINE	0-19	0-13	0-8	0-7	0-6	0-5
LYSINE	22-171	15-199	13-79	10-68	10-56	7-58
HISTIDINE	80-295	92-278	87-287	45-255	43-159	26-153
3-METHYLHISTIDINE	20-39	19-40	20-57	18-61	20-56	19-47
ARGININE	0-14	0-11	0-11	0-9	0-6	0-5

Testing Laboratory Location

KKH

Laboratory

Biochemical Genetics Lab

Contact Number

6394 8728

Day and Time Performed

Mon – Fri: 0900 hrs – 1800 hrs

Orderable on CPOE?

Yes

Downtime Form

Biochemical Genetics Lab

Additional Information

Useful For	Detecting disorders such as phenylketonuria(PKU), tyrosinaemia, maple syrup urine disease(MSUD), cystinuria, homocystinuria 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	acute 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, urine will be stored in Clinical Laboratory -20°C freezer.

Change History Notes

02 Jul 2025 03:00 PM

Update day/time performed.

Back: eLab Book (Test Catalogue)

Last Updated - 02 Jul 2025