There are several tests done for thyroid function. They require different tubes.
The vacutainer for a TSH test is usually a red and gray or gold top tube, which contains a gel separator. The test should be done in the morning as TSH levels tend to be higher at this time.
TSH (Thyroid Stimulating Hormone) is typically drawn in a lavender/purple-top tube, which contains the anticoagulant EDTA. It is important to check with the specific laboratory or facility to confirm the correct tube color for this test.
Red
yellow
A lavender or purple tube is typically used for TSH (Thyroid Stimulating Hormone) blood draw.
A lavender or purple top tube is typically used for TSH (Thyroid Stimulating Hormone) testing.
A TSH blood draw typically goes into a lavender or purple-top tube containing an EDTA anticoagulant. This tube is used for testing thyroid-stimulating hormone (TSH) levels as part of thyroid function tests.
HbA1C test tubes are typically light purple in color, signifying that the blood sample is for a chemistry test.
Gray tube
The correct color tube for a thrombin test is typically a light blue tube. This tube contains sodium citrate as an anticoagulant, which is needed for coagulation studies.
SST tube (yellow color)
The tube top color for an acid phosphatase blood test is lavender.