When it’s hot out, our longline bandeau tops are best paired with shorts. Denim or jersey, the look is simple, sunny and summer-ready. You might even consider a longer chino style, which takes the look from beach to bar in a hot second. Now throw on your flip flops and go get that vitamin D! Fits for all

What additive does: Sodium fluoride acts as an antiglycolytic agent to ensure that no further glucose breakdown occurs within the sample after it is taken. Potassium oxalate removes calcium and acts as an anticoagulant. Royal blue tubes are ideal for tests that do not require either coagulation or anticoagulation to generate reliable results. Pearl TopThe calcium citrate is a powerful anticoagulant that binds to the calcium in the blood required for clotting. How much of the chemical the tubes contain is very much a function of the specifications of the manufacturer. Some are more liable to increase calcium citrate levels than others. Light blue-topped tubes come with two main additives: CTAD (Citrate, theophylline, adenosine, dipyridamole) and sodium citrate at concentrations of 3.2 or 3.8 percent.

The red bottle is less common – it is used for biochemistry tests requiring serum which might be adversely affected by the separator gel used in the yellow bottle. In many cases, there is no need to open purple tubes. Manufacturers design them for direct sampling. This less commonly used bottle is for biochemistry tests which require heparinised plasma or whole blood for analysis. Royal blue-capped tubes have no additives and are usually made of special glass or plastic that will not contaminate the specimen. Phlebotomists use royal blue tubes to test:

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Laboratory uses: Chemistry trace elements (such as Zinc, Copper, Lead and Mercury), toxicology, and nutritional chemistry testing Phlebotomists use pearl tubes for HHV-6, adenovirus and toxoplasma PCRs. Typically they contain a separating gel and EDTA. Pearl tubes typically draw 6 ml, with a minimum of 4 ml Gold Top