Special Requirement

1 red top tube

Methodology

Enzyme Immunoassay

Special Instructions

Do not use SST tube for specimen collection, drug binding to the gel may result in falsely lowered drug levels. If specimen is collected to SST tube, spin after 30 mins and separate serum.

Collection Days

Monday-Friday

Report Available

Daily

CPT Code

80156

Reference Range

4-10 ug/ml

Interfering Substance

Hemoglobin, rheumatoid factor, lipemia, paraprotein(IGM) are known to interfere with this methodology.