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Test Code FNTSM Neurotransmitter Profile 3

Important Note

CMH COLLECTION: Contact the lab for special CSF collection tubes.  If Neurotransmitter Metabolites, Tetrahydrobiopterin, or Neopterin are ordered, tests can be performed in those tubes.


Specimen Required


Medical Neurogenetics collection kit (MCL Supply T657) required.

Each collection kit contains 5 microcentrifuge tubes.

 

COLLECTION PROTOCOL:

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: 1.0 mL

Tube 3: 1.0 mL (contains antioxidants necessary to protect the same integrity)

Tube 4: 1.0 mL

Tube 5: 1.0 mL

 

-If samples not blood contaminated, the tubes 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 Medical Neurogenetics, LLC request form, marking the following three tests: Neurotransmitter Metabolites, Tetrahydrobiopterin and 5-Methyltetrahydrofolate. Also include sample date and date of birth.

 

3) Label tubes with patient name and ID number, leaving the tube number viewable.

 

4) Place samples inside the specimen transport bag and the Medical Neurogenetics, LLC request form inside the pouch of the transport bag.

 

5) Ship samples frozen on dry ice.


Specimen Stability Information

Specimen Type Temperature Time Special Container
CSF Frozen CSF KIT

Reject Due To

Specimens other than CSF in special collection kit (MCL supply T657)
Anticoagulants other than NA
Hemolysis NA
Lipemia NA
Icteric NA

Day(s) Performed

Monday through Friday

Report Available

14 to 18 days

Reporting Name

Neurotransmitter Profile 3

Reference Values

5-Methyltetrahydrofolate

Age (years)

5MTHF (nmol/L)

0-0.2

40-240

0.2-0.5

40-240

0.5-2.0

40-187

2.0-5.0

40-150

10-15

40-128

Adults

40-120

 

Neurotransmitter Metabolites/Amines

Age (years)

5HIAA (nmol/L)

HVA (nmol/L)

3-O-MD (nmol/L)

0-0.2

208-1159

337-1299

<300

0.2-0.5

179-711

450-1132

<300

0.5-2.0

129-520

294-1115

<300

2.0-5.0

74-345

233-928

<150

5.0-10

66-338

218-852

<100

10-15

67-189

167-563

<100

Adults

67-140

145-324

<100

 

Neurotransmitter Metabolites/Amines

Age (years)

5HIAA (nmol/L)

HVA (nmol/L)

3-O-MD (nmol/L)

0-0.2

208-1159

337-1299

<300

0.2-0.5

179-711

450-1132

<300

0.5-2.0

129-520

294-1115

<300

2.0-5.0

74-345

233-928

<150

5.0-10

66-338

218-852

<100

10-15

67-189

167-563

<100

Adults

67-140

145-324

<100

 

Tetrahydrobiopterin/Neopterin Profile

Age (years)

BH4 (nmol/L)

Neop (nmol/L)

0-0.2

40-105

7-65

0.2-0.5

23-98

7-65

0.5-2.0

18-58

7-65

2.0-5.0

18-50

7-65

5.0-10

9-40

7-40

10-15

9-32

8-33

Adults

10-30

8-28

 

Note: If test results are inconsistent with the clinical presentation, please call our laboratory to discuss the case and/or submit a second sample for confirmatory testing.

 

DISCLAIMER required by the FDA for high complexity clinical laboratories: HPLC testing was developed and its performance characteristics determined by Medical Neurogenetics. These HPLC tests have not been cleared or approved by the U.S. FDA.

Method Name

High Performance Liquid Chromatography-Electrochemistry & Fluorescences

Performing Laboratory

Medical Neurogenetics, LLC

CPT Code Information

82542 - 5-Methyltetrahydrofolate

82542 - Tetrahydrobiopterin/Neopterin

82542, 83497, 83150 - Neurotransmitter Metabolites/Amines

Profile Information

Test ID Reporting Name Available Separately Always Performed
F5MET 5-Methyltetrahydrofolate Yes, (order F5M) Yes
FNTM Neurotransmitter Metabolites/Amines Yes, (order FNEU) Yes
FFTHB Tetrahydrobiopterin/Neopterin Yes, (order FFTEN) Yes