Green
The tube for collecting blood for Beta HCG testing is typically a plain red-top tube.
The color of the top tube typically used for human chorionic gonadotropin (hCG) testing is red or red-gray.
The recommended tube for collecting blood for HCG Quant AFP testing is a red or gold-top tube.
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If you mean, what does it mean to have a high hcg level in the absence of fetal heart tones, I would say either you have a test tube with hcg in it, or a molar pregnancy.
A red or yellow test tube is typically used for an hCG test, as these tubes contain a gel separator to separate serum from the blood after centrifugation. This allows for better and cleaner sample collection for the test.
red tube
For HCG quantitative testing, the preferred tube color is typically lavender or purple, which contains EDTA as an anticoagulant. However, some laboratories may also accept serum samples collected in a red-top tube without additives. Always check with the specific laboratory for their requirements, as practices may vary.
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Red
A lavender/purple top tube is typically used for collecting blood specimens for phenobarbital level testing. This tube contains EDTA as an anticoagulant.
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