There are several tests done for thyroid function. They require different tubes.
tube color for Thyroid Stimulating Hormone test is the gold tube for chemistry testing.
A lavender or purple top tube is typically used for TSH (Thyroid Stimulating Hormone) testing.
There are several tests done for thyroid function. They require different tubes.
A lavender or purple-top tube is typically used for thyroid function tests as it contains the anticoagulant EDTA. This tube is important for preserving the integrity of the sample for accurate testing.
Red
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.
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.
A lavender or purple-top tube is typically used for testing iron levels in the blood.
Green (sodium/lithium heparin) or yellow/red a serum separator tube.
A purple top test tube is typically used for TPO (thyroid peroxidase) testing. The specific color coding may vary by laboratory, so it's always best to confirm with the specific lab where the test will be done.
A lavender or light purple tube is typically used for amylase testing. This color tube contains an anticoagulant called EDTA to prevent the blood from clotting.
A green or tiger-top tube can be used for BUN testing.