A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
T4, Total, Plasma or Serum
Test CodeT4
CPT Codes
84436
Preferred Specimen
Submit only 1 of the following specimens:
Plasma
Draw blood in a green-top (heparin) tube or a lavender-top
(EDTA) tube. Spin specimen down and send 0.5 mL
of plasma.
Note: 1. Indicate plasma.
2. Label specimen appropriately (plasma).
Serum
Draw blood in a plain, red-top tube or a serum gel tube. Spin
specimen down and send 0.5 mL of serum.
Note: 1. Indicate serum on request form.
2. Label specimen appropriately (serum).
Plasma
Draw blood in a green-top (heparin) tube or a lavender-top
(EDTA) tube. Spin specimen down and send 0.5 mL
of plasma.
Note: 1. Indicate plasma.
2. Label specimen appropriately (plasma).
Serum
Draw blood in a plain, red-top tube or a serum gel tube. Spin
specimen down and send 0.5 mL of serum.
Note: 1. Indicate serum on request form.
2. Label specimen appropriately (serum).
Transport Temperature
Refrigerate up to 5 days hours/Frozen OK
Methodology
Competitive Immunoassay
Setup Schedule
Monday through Sunday
Reference Range
4.5-12.0 µg/dL
Performed By
North Mississippi Medical Center Pathology Department
Performing Laboratory
NMMC Pathology Department