Timing, specimen options and instructions reflect the source snapshot.
FROM COLLECTION TO THE LAB
Specimen & handling
Specimen
Serum
Container
Serum Separator Tube (SST) – 0.5 ml serum.
Required volume
Serum Separator Tube (SST) – 0.5 ml serum.
Preparation
None required.
Collection instructions
Serum Separator Tube (SST) – 0.5 ml serum.
Processing
Use all appropriate Personal Protective Equipment (PPE). Allow specimen to clot (15 min.) completely at room temperature. Separate serum from cells by centrifuging for 10 min. Serum free from hemolysis is the recommended specimen.
Storage
Refrigerated.
Stability
Refrigerated 1 week, Frozen 2 weeks . Avoid repeated freezing and thawing of the specimen.
Rejection criteria
Mislabeled; broken or damaged tubes, the sample w/o test request.
Technical information & codes+
Methodology
Quantitative Spectrophotometry
CPT code
82040
Codes are shown for identification from the source snapshot. Confirm current coding and billing information with the laboratory.
