Question: What Is The Purpose Of A Serum Separator In A Blood Collection Tube?

What is the clot activator in a serum separator tube?

The silica particles that coat the walls of the BD Vacutainer SST tube are the clot activator.

Initial activation occurs when blood enters the tube and contacts the particles on the tube wall.

To continue the activation process, it is necessary to thoroughly mix the blood and particles by inverting the tube five times..

What is the correct order of blood draw?

The correct order of draw follows: Blood culture tube or bottle. Sodium citrate tube (eg, blue closure) Serum tubes, including those with clot activator and gels (eg, red, red-speckled, gold closures)

How long is blood good for?

Q: How long do you store blood? A: We can store blood for 42 days if we do not freeze it. Frozen blood can be stored ten years, but freezing blood is a poor way of storing it. Generally speaking, we store blood in the refrigerator, where we can store it for up to 42 days.

What color tube is used for cholesterol testing?

CHOLESTEROLORDERING INFORMATION:Specimen type:Plasma or SerumPreferred collection container:Stat/Line draws: 3 mL green/yellow-top (plasma separator) tube Routine requests/off-site specimens: 3.5 mL gold-top (serum separator) tubeSpecimen required:2 mL of serum or plasma; minimum 0.2 mL.17 more rows

Which blood tube should always be drawn first?

All plastic tubes must be gently inverted 5-10 times to provide thorough mixing of the additives. Shaking the tube may cause hemolysis of the blood. 1. Blood cultures should always be drawn first to reduce the potential hazard bacterial, fungal, quantitative, CMV and/or other specimen contamination.

What is serum collection?

Serum is the liquid fraction of whole blood that is collected after the blood is allowed to clot. The clot is removed by centrifugation and the resulting supernatant, designated serum, is carefully removed using a Pasteur pipette.

How long is blood good for in a tube?

Whole blood can be stored at 4–8°C for up to 24 hours before the serum is separated, but it must not be frozen.

How long do you spin blood for serum?

Centrifuge for at least 15 minutes at 2200-2500 RPM within one hour of collection. Transfer the serum to a plastic screw-cap vial for transport to the laboratory.

What tube has a clot activator?

Red-top tube: Tube does not contain an anticoagulant. This tube is used for collecting serum or clotted whole blood specimens. Tiger-top tube (serum separator): Tube does not contain an anticoagulant but does contain a clot activator and serum separator gel. This tube is used for collecting serum.

Does order of draw matter?

The order of draw is recommended for both glass and plastic venous collections tubes when drawing multiple specimens for medical laboratory testing during a single venipuncture. The purpose is to avoid possible test result error due to additive carryover. All additive tubes should be filled to their stated volumes.

How do you remember the order of phlebotomy?

Color. Yellow. Blue. Red. SST. Green. Lavender. Grey.Color. Yellow top tube (or anaerobic/aerobic bottles) Blue (AKA Lt Blue) Red. SST (AKA as Gold or Tiger top) Green (either dark or light) Lavender. Grey.Mnemonic. Young. Bodies. Really. Should. Get. Large. Grains.

What color tube is used for serum?

Serum is usually collected in mottled red/gray, gold, or cherry red-top tubes, and red-top tubes are occasionally used. Plasma is obtained from blood that has been mixed with an anticoagulant in the collection tube and has, therefore, not clotted.

What blood tube colors are for which test?

The tests each bottle is used for are the same: the purple one is for cell count, the yellow one is for electrolytes, albumin and LDH, the grey one is for glucose, and blood culture bottles can be used for fluid cultures.

What is the yellow top tube used for?

Yellow-top tube (ACD) This tube contains ACD, which is used for the collection of whole blood for special tests. NOTE: After the tube has been filled with blood, immediately invert the tube 8-10 times to mix and ensure adequate anticoagulation of the specimen.

Which blood culture bottle do you draw first?

The aerobic bottle should be inoculated first as there is about 0.5 cc of air in the line of the collection set and sometimes it is difficult to obtain 8-10 cc of blood per bottle (15-20 cc/set). The aerobic bottle is the more critical one to inoculate short samples into.

What is the purpose of a clot activator in a blood collection tube?

Clot activator promotes blood clotting with glass or silica particles. Gel separates serum from cells. Fluoride inhibits glycolysis, and oxalate prevents clotting by precipitating calcium.

What tests are done on serum?

A serum albumin test can tell your doctor how well your liver is working. It’s often one of the tests in a liver panel. In addition to albumin, a liver panel tests your blood for creatinine, blood urea nitrogen, and prealbumin.

What is difference between plasma and serum?

A key difference between plasma and serum is that plasma is liquid, and serum is fluid. … Serum is mostly used for blood typing but is also used for diagnostic testing. Plasma, on the other hand, is mostly used for blood-clotting related problems.

How long after blood is taken is it tested?

Specialty tests for rare conditions often need to be sent to specific laboratories. According to Regional Medical Laboratory, most in-hospital results can be obtained within three to six hours after taking the blood. Sometimes blood drawn at other, non-hospital facilities can take several days to get results.

What color tube is for electrolytes?

PHCC Phlebotomy (Lab tests and departments)QuestionAnswerWhat color tube(s) is used for a CMP?Green PST / SST / Plain RedWhat color tube(s) is used for a Retic count?LavenderWhat color tube(s) is used for PTT?Blue TopWhat color tube(s) is used for Electrolytes?Grenn PST / SST / Plain Red33 more rows

What tube is used for blood collection?

The larger (6ml) tube is used for blood bank procedures. Red-Top Tube – This tube has no anticoagulant and is used for many chemistry tests, drug levels, and blood bank procedures. Navy Blue-Top Tube – There are two general types – one with K2 EDTA and one with no anti-coagulant.