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Lab Test Dictionary

Vitamin B1 (Thiamine), LC/MS/MS (90353)

Methodology

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


Synonyms

B1; Thiamine

Specimen Type

Serum or Plasma

Performing Lab

Quest Diagnostics Valencia


Epic ID

LAB01544

Lab Test Days

Tuesday-Saturday

Standard TAT

2-3 Days


Collection Information

Specimen Required

2-4 mL Blood

Container Type

Lavender (EDTA)

Collection Instructions

Serum collected in a (red-top) tube is also acceptable. Overnight fasting is required. Protect from light.


Processing Information - Lab Use Only

Transport Temperature

Frozen-Only

Specimen Stability

Room Temp: 8 Hours; Refrigerated: 48 Hours; Frozen: 30 Days

Rejection Criteria

Received room temp; Received refrigerated; Hemolysis; Lipemia

Test Volume Required

2 mL Serum or Plasma

Minimum Test Volume

1 mL Serum or Plasma

Processing Instructions

Separate serum or plasma from cells within 4 hours of collection. Protect from light.


Comments

Quest only reports reference ranges on patients >17 years old.


CPT Codes

84425


Revised

07-24-19

Initials

SL