This depends on the method that the laboratory employs.
I assume that you are referring to the color coding system on the tubes that indicates what additives are inside of the tubes. Most laboratories will run most chemistry assays on gold top or SST (Serum Separator Tubes). Other methods for running electrolytes could be in a laboratory that uses an iStat device or something similar that can use whole blood as well as serum.
In the NHA book it is written that Green top tube is for STAT electrolytes.
Red/ Tiger top
A gold or red/gray tiger top tube is typically used to collect blood for a SMA12 test, which measures various electrolytes, proteins, and other substances in the blood.
A green top tube (containing lithium heparin or sodium heparin) is typically used for drawing blood for electrolyte testing. The anticoagulants in these tubes help preserve the sample for accurate testing.
For a HgA1c you would need a lavender top tube.
In the NHA book it is written that Green top tube is for STAT electrolytes.
Red top tube would be used. This color tube is also used for kidney and liver function tests, electrolytes(Na, K, Cl, C02), sometimes glucose and also iron levels.
Red/ Tiger top
A gold or red/gray tiger top tube is typically used to collect blood for a SMA12 test, which measures various electrolytes, proteins, and other substances in the blood.
A green top tube (containing lithium heparin or sodium heparin) is typically used for drawing blood for electrolyte testing. The anticoagulants in these tubes help preserve the sample for accurate testing.
A green-top tube is typically used for a blood chloride test, as this tube contains heparin as an anticoagulant, which is suitable for analyzing electrolytes like chloride. It is important to consult the specific lab's requirements for the appropriate tube color and collection method.
The color of the tube that is most often used for hematology CBC tests are
For a HgA1c you would need a lavender top tube.
red tube
The color of tube used for ferritin is typically gold or red/gray.
The color of the tube commonly used for CBC (Complete Blood Count) is lavender or purple.
The color tube used for folate testing is typically a lavender or purple-top tube. These tubes contain the anticoagulant EDTA which is used to preserve the blood sample for testing.