Monoamine Neurotransmitter Metabolites/Amines
NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.
HPLC and electrochemical detection
Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name
Specimen Type Describes the specimen type needed for testing
Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.
1. Baylor collection kit (MML Supply T612) required.
Each collection kit contains 5 microcentrifuge tubes
in a cardboard holder. Tube #3 contains antioxidants
necessary to protect the same integrity. One set of tubes
is required per patient.
- Baylor request form and collection protocol.
- Collection date
- Date of birth
- Current medications and relevant history
1) CSF should be collected from the first drop into the tubes in
the numbered order. Fill each tube to the marked line with
the required volumes.
Tube 1: 0.5 mL
Tube 2: 0.5 mL
Tube 3: 1.0 mL (contains antioxidants necessary to protect
the sample integrity)
Tube 4: 1.0 mL
Tube 5: 0.5 mL
- If samples not blood contaminated should be placed on dry
ice at bedside
- If samples are blood contaminated, the tubes should immediately
be centrifuged (prior to freezing) and the clear CSF transferred to
new similarly labeled tubes, then frozen.
-Store samples at -80 until they can be shipped.
2) Complete Baylor Neuropharmacology request form. Include
test required, sample date, date of birth, current medications
and relevant history.
3) Label tubes with patient name and ID number, leaving the tube
4) Place samples inside a specimen transport bag and the Baylor
request forms inside the pouch of the transport bag.
5) Ship samples frozen on dry ice.
Specimens other than
Anticoagulants other than
Use Baylor collection kit (MML Supply T612)
Warm reject; Cold reject
Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.
Reference Values Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.
CSF Metabolite Age related reference ranges (values
expressed in nmol/L)
5-Hydroxyindoleacetic acid (5HIAA)
Newborn 0-73 days 208-1159
Infant 73 days-6 months 179-711
Toddler 6 months-2 years 129-520
Child 2-5 years 74-345
Older Child 5-10 years 66-338
Adolescent 10-15 years 67-189
Adult > 15 years 67-140
Homovanillic acid (HVA)
Newborn 0-73 days 337-1299
Infant 73 days-6 months 450-1132
Toddler 6 months-2 years 294-1115
Child 2-5 years 233-918
Older Child 5-10 years 218-852
Adolescent 10-15 years 167-852
Adult > 15 years 145-852
Newborn 0-73 days 0-300
Infant 73 days-6 months 0-300
Toddler 6 months-2 years 0-300
Child 2-5 years 0-150
Older Child 5-10 years 0-100
Adolescent 10-15 years 0-100
Adult > 15 years 0-100
Test Performed By: Baylor Institute of Metabolic Disease
Baylor Research Institute
3812 Elm Street
Dallas, TX 75226
Day(s) and Time(s) Test Performed Outlines the days and times the test is performed. This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed. Some tests are listed as continuously performed, which means assays are performed several times during the day.
Analytic Time Defines the amount of time it takes the laboratory to setup and perform the test. This is defined in number of days. The shortest interval of time expressed is "same day/1 day," which means the results may be available the same day that the sample is received in the testing laboratory. One day means results are available 1 day after the sample is received in the laboratory.
Maximum Laboratory Time Defines the maximum time from specimen receipt at Mayo Medical Laboratories until the release of the test result
9 - 11 days
Performing Laboratory Location The location of the laboratory that performs the test
Baylor University M
CPT Code Information Provides guidance in determining the appropriate Current Procedural Terminology (CPT) code(s) information for each test or profile. The listed CPT codes reflect Mayo Medical Laboratories interpretation of CPT coding requirements. It is the responsibility of each laboratory to determine correct CPT codes to use for billing.
LOINC® Code Information Provides guidance in determining the Logical Observation Identifiers Names and Codes (LOINC) values for the result codes returned for this test or profile.
|Result ID||Reporting Name||LOINC Code|
|Z0106||5-Hydroxyindoleacetic acid (5HIAA)||In Process|
|Z0107||Homovanillic acid (HVA)||In Process|
|Z0108||3-O-methyldopa (3-OMD)||In Process|