5-Hydroxyindoleacetic Acid, Random, Urine - Norman Regional Laboratory Services Test Catalog

Reporting Name

5-HIAA, Random, U

Specimen Type

Urine

Ordering Guidance

This test uses a random urine collection to assess 5-hydroxyindoleacetic acid concentrations. If a 24-hour urine collection is preferred, order HIAA / 5-Hydroxyindoleacetic Acid, 24 Hour, Urine.

Necessary Information

Patient's age and sex are required.

Specimen Required

Patient Preparation:

1. Some medications could interfere with test results. If medically feasible, for 48 hours before specimen collection, patient should not take the following medications:

-Acetaminophen (Tylenol or generic versions)

-Tryptophan containing supplements

2. For 48 hours prior to the urine collection, the patient should limit the following to one serving per day:

-Fruits

-Vegetables

-Nuts

-Caffeinated beverages or foods

Supplies: Urine Tubes, 10 mL (T068)

Container/Tube: Plastic, 10-mL urine tube

Specimen Volume: 5 mL

Collection Instructions:

1. Collect a random urine specimen.

2. Store and send refrigerate

Specimen Minimum Volume

2 mL

Specimen Stability Information

Specimen Type	Temperature	Time
Urine	Refrigerated (preferred)	56 days
	Frozen	365 days

Method Name

Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)

Reject Due To

All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Reference Values

	5-HIAA, mg/g creatinine 99th percentile cutoff
Age	Female	Male
≤23 months	≤17.53	≤16.42
24-35 months	≤17.07	≤15.96
3 years	≤16.70	≤15.60
4 years	≤16.03	≤14.93
5 years	≤15.26	≤14.17
6 years	≤14.40	≤13.34
7 years	≤13.47	≤12.43
8 years	≤12.52	≤11.52
9 years	≤11.58	≤10.63
10 years	≤10.67	≤9.79
11 years	≤9.81	≤9.00
12 years	≤9.02	≤8.29
13 years	≤8.32	≤7.65
14 years	≤7.70	≤7.08
15 years	≤7.16	≤6.59
16 years	≤6.72	≤6.15
17 years	≤6.36	≤5.78
18 years	≤6.08	≤5.45
19 years	≤5.88	≤5.17
20 years	≤5.73	≤4.93
21 years	≤5.64	≤4.73
22 years	≤5.59	≤4.55
23 years	≤5.57	≤4.40
24 years	≤5.57	≤4.28
25 years	≤5.58	≤4.19
26 years	≤5.61	≤4.11
27 years	≤5.64	≤4.06
28 years	≤5.67	≤4.03
29 years	≤5.70	≤4.02
30 years	≤5.72	≤4.01
31 years	≤5.75	≤4.02
32 years	≤5.77	≤4.03
33 years	≤5.78	≤4.05
34 years	≤5.79	≤4.06
35 years	≤5.80	≤4.08
36 years	≤5.80	≤4.09
37 years	≤5.80	≤4.11
38 years	≤5.80	≤4.12
39 years	≤5.81	≤4.14
40 years	≤5.82	≤4.17
41 years	≤5.85	≤4.22
42 years	≤5.89	≤4.27
43 years	≤5.95	≤4.35
44 years	≤6.04	≤4.43
45 years	≤6.14	≤4.53
46 years	≤6.26	≤4.63
47 years	≤6.40	≤4.75
48 years	≤6.55	≤4.86
49 years	≤6.71	≤4.99
50 years	≤6.86	≤5.11
51 years	≤7.01	≤5.24
52 years	≤7.15	≤5.37
53 years	≤7.29	≤5.51
54 years	≤7.41	≤5.64
55 years	≤7.52	≤5.78
56 years	≤7.62	≤5.91
57 years	≤7.71	≤6.05
58 years	≤7.80	≤6.17
59 years	≤7.88	≤6.29
60 years	≤7.95	≤6.41
61 years	≤8.02	≤6.51
62 years	≤8.09	≤6.60
63 years	≤8.15	≤6.69
64 years	≤8.21	≤6.76
65 years	≤8.28	≤6.82
66 years	≤8.34	≤6.88
67 years	≤8.40	≤6.93
68 years	≤8.46	≤6.97
69 years	≤8.52	≤7.00
70 years	≤8.58	≤7.03
71 years	≤8.65	≤7.06
72 years	≤8.71	≤7.08
73 years	≤8.77	≤7.10
74 years	≤8.82	≤7.11
75 years	≤8.86	≤7.11
76 years	≤8.90	≤7.11
77 years	≤8.92	≤7.10
78 years	≤8.93	≤7.09
79 years	≤8.93	≤7.07
80 years	≤8.92	≤7.05
81 years	≤8.90	≤7.02
82 years	≤8.88	≤7.00
83 years	≤8.86	≤6.98
84 years	≤8.85	≤6.97
85 years	≤8.84	≤6.95
86 years	≤8.84	≤6.94
87 years	≤8.84	≤6.94
88 years	≤8.84	≤6.94
>or= 89 years	≤8.85	≤6.93

Day(s) Performed

Monday through Friday

Report Available

2 to 4 days

Specimen Retention Time

7 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

83497

Useful For

Biochemical diagnosis and monitoring of intestinal carcinoid syndrome using random urine specimens

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TEST ID HIAAR 5-Hydroxyindoleacetic Acid, Random, Urine