Item Value
Test name Free Hemoglobin, Plasma
Available Stat? Yes
Turn around times STAT 1 hour, Routine 4 hours
Performed by Parnassus Chemistry
Normal range < 8 mg/dL
Container type Light green top preferred, Dark green top acceptable
Amount to Collect 2 mL blood
Collection Instructions Results are highly dependent upon meticulous technique employed in collecting the specimen. To avoid hemolysis use an 18-19 ga. butterfly needle and discard the first 4 mL. Alternatively, apply a tourniquet and perform a venipuncture with an 18-19 ga. needle; collect any other tubes which are needed before releasing the tourniquet with the vacutainer still in the vein and collecting the sample for the hemoglobin assay. If no other samples are being collected at the same time, draw and discard one tube, release the tourniquet, then draw a second tube and submit the second tube for analysis.
Sample type Heparinized plasma

If you have additional questions regarding this test, please call: 415-353-1667