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VITAMIN B1 (THIAMINE)
Number 1379
CPT Code 84425
Alias THIAMINE
Specimen Container Lavender Top
Specimen Type Whole Blood EDTA
Turn Around Time 
Days Performed 
Reference Range 66.5-200.0 nmol/L
Alternate Specimen 
Volume 1 mL Whole Blood
Stability Ambient Unstable
Stability Refrigerated 2 Days
Stability Frozen 7 Days
Patient Preparation 
Methodology 

High-pressure liquid chromatography (HPLC)

Limitations 

The biologically active form of the vitamin, thiamine diphosphate (TDP), is best measured in whole blood and is not found in measurable concentration in plasma. Plasma thiamine concentration reflects recent intake rather than body stores; therefore, whole blood is the preferred specimen for thiamine assessment. Approximately 80% of thiamine present in whole blood is found in red blood cells.

Rejection Criteria 

Specimen not frozen (-20°C); plasma specimen; use of anticoagulants other than EDTA; specimen not protected from light

Additional Instructions 

Protect from light

Performing Laboratory Reference Laboratory
Tags

Covid-19/Influenza Combination Test

We are pleased to share with you that Primex is now offering the Combo test for COVID-19 and Flu. We are also now separately offering the Influenza A&B NAAT test.

The Los Angeles County Public Health Department states the following, People with flu may have a range of symptoms which are identical to symptoms of COVID-19, including fever, cough, sore throat, runny/stuffy nose, muscle body aches, headache, fatigue, vomiting and diarrhea. So offering this combo test could provide important medical care information to the ordering provider and to the patient.

Primex leadership is pleased to offer this service enhancement to our current and prospective clients.

Click here for more information

 

Covid-19/Influenza Combination Test

We are pleased to share with you that Primex is now offering the Combo test for COVID-19 and Flu. We are also now separately offering the Influenza A&B NAAT test.
The Los Angeles County Public Health Department states the following, People with flu may have a range of symptoms which are identical to symptoms of COVID-19, including fever, cough, sore throat, runny/stuffy nose, muscle body aches, headache, fatigue, vomiting and diarrhea. So offering this combo test could provide important medical care information to the ordering provider and to the patient.
Primex leadership is pleased to offer this service enhancement to our current and prospective clients.
Click here for more information