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Test Code 9619 Vitamin B3 Niacin in Plasma

Additional Codes

Mayo Test ID

Reporting Name

Niacin (Nicotinic Acid)

Performing Laboratory

Cambridge Biomedical Inc.

Specimen Type

Plasma EDTA

Specimen Required

Specimen Type: Plasma

Container/Tube: EDTA

Specimen Volume: 4 mL

Collection Instructions:  Draw sufficient blood in a lavender-top (EDTA) tube(s). Spin down and transfer to a plastic Amber vial (T192) to protect from light within 30 minutes of collection. Freeze and send 4 mL EDTA plasma frozen on dry ice.

Barnes-Jewish Hospital Note:
For non hospital patient, call Barnes-Jewish Hospital Laboratory Customer Service at 314-362-1470 for STAT pick-up.


Send original tube on wet ice.

Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time
Plasma EDTA Frozen (preferred) 56 days
  Refrigerated  48 hours

Reference Values

Units: ug/mL

Adult Reference Range:

≥ 10 years

Normal            0.50 - 8.45

Low                         <0.50

High                        >8.45


Pediatric Reference Range:

<10 years

Normal            0.50 - 8.91

Low                         <0.50

High                        >8.91

Day(s) and Time(s) Performed

Varies; One day per week

Test Classification

The performance characteristics of the listed assay was validated by Cambridge Biomedical Inc. The US FDA has not approved or cleared this test. The results of this assay can be used for clinical diagnosis without FDA approval. Cambridge Biomedical Inc. is a CLIA certified, CAP accredited laboratory for performing high complexity assays such as this one.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
FNIAC Niacin (Nicotinic Acid) 18244-4


Result ID Test Result Name Result LOINC Value
Z0144 Niacin 18244-4

Method Name

High Performance Liquid Chromatography (HPLC)

Barnes-Jewish Hospital Additional Information:
For BJH Laboratory Use Only

Laboratory Processing Instructions:

BJH Chemistry will forward to Mayo Medical Laboratories who will forward to the performing laboratory. Specimen must be received on wet ice; do not reject unspun specimen if not received protected from light.