C1 esterase inhibitor

Home

Add to favorites Print

Print page

Click on the first letter in the test name:

| 2 | 5 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X

C1 esterase inhibitor Article

C1 esterase inhibitor

complement complement-component-3-c3 complement-component-4 complement complement

Definition

C1 esterase inhibitor (C1-INH) is a protein found in the fluid part of your blood that controls C1, the first component of the complement system. The complement system is a group of proteins that move freely through your bloodstream. The proteins work with your immune system and play a role in the development of inflammation. There are nine major complement proteins. They are labeled C1 through C9.

This article discusses the test that is done to measures the amount of C1-INH in your blood.

Alternative Names

C1 inhibiting factor; C1-INH

Why the C1 esterase inhibitor is Performed

Your doctor may order this test if you have signs of hereditary angioedema. Hereditary angioedema is caused by low levels of C1-INH.

How the C1 esterase inhibitor is Performed

Blood is drawn from a vein, usually from the inside of the elbow or the back of the hand. The site is cleaned with germ-killing medicine (antiseptic). The health care provider wraps an elastic band around the upper arm to apply pressure to the area and make the vein swell with blood.

Next, the health care provider gently inserts a needle into the vein. The blood collects into an airtight vial or tube attached to the needle. The elastic band is removed from your arm.

Once the blood has been collected, the needle is removed, and the puncture site is covered to stop any bleeding.

In infants or young children, a sharp tool called a lancet may be used to puncture the skin and make it bleed. The blood collects into a small glass tube called a pipette, or onto a slide or test strip. A bandage may be placed over the area if there is any bleeding.

How to Prepare for the C1 esterase inhibitor

No special preparation is needed.

How the C1 esterase inhibitor Will Feel

When the needle is inserted to draw blood, some people feel moderate pain, while others feel only a prick or stinging sensation. Afterward, there may be some throbbing.

Risks

Excessive bleeding
Fainting or feeling light-headed
Hematoma (blood accumulating under the skin)
Infection (a slight risk any time the skin is broken)
Multiple punctures to locate veins

Normal Results

C1 esterase inhibitor: 16 to 33 milligrams per deciliter (mg/dL)

What Abnormal Results Mean

Abnormal results may be due to certain types of angioedema.

Email to a Friend

Typical mistypes for C1 esterase inhibitor
x1 esterase inhibitor, v1 esterase inhibitor, f1 esterase inhibitor, d1 esterase inhibitor, c2 esterase inhibitor, cq esterase inhibitor, c1 wsterase inhibitor, c1 ssterase inhibitor, c1 dsterase inhibitor, c1 rsterase inhibitor, c1 4sterase inhibitor, c1 3sterase inhibitor, c1 eaterase inhibitor, c1 ezterase inhibitor, c1 exterase inhibitor, c1 edterase inhibitor, c1 eeterase inhibitor, c1 ewterase inhibitor, c1 esrerase inhibitor, c1 esferase inhibitor, c1 esgerase inhibitor, c1 esyerase inhibitor, c1 es6erase inhibitor, c1 es5erase inhibitor, c1 estwrase inhibitor, c1 estsrase inhibitor, c1 estdrase inhibitor, c1 estrrase inhibitor, c1 est4rase inhibitor, c1 est3rase inhibitor, c1 esteease inhibitor, c1 estedase inhibitor, c1 estefase inhibitor, c1 estetase inhibitor, c1 este5ase inhibitor, c1 este4ase inhibitor, c1 esterzse inhibitor, c1 estersse inhibitor, c1 esterwse inhibitor, c1 esterqse inhibitor, c1 esteraae inhibitor, c1 esteraze inhibitor, c1 esteraxe inhibitor, c1 esterade inhibitor, c1 esteraee inhibitor, c1 esterawe inhibitor, c1 esterasw inhibitor, c1 esterass inhibitor, c1 esterasd inhibitor, c1 esterasr inhibitor, c1 esteras4 inhibitor, c1 esteras3 inhibitor, c1 esterase unhibitor, c1 esterase jnhibitor, c1 esterase knhibitor, c1 esterase onhibitor, c1 esterase 9nhibitor, c1 esterase 8nhibitor, c1 esterase ibhibitor, c1 esterase imhibitor, c1 esterase ijhibitor, c1 esterase ihhibitor, c1 esterase ingibitor, c1 esterase inbibitor, c1 esterase innibitor, c1 esterase injibitor, c1 esterase inuibitor, c1 esterase inyibitor, c1 esterase inhubitor, c1 esterase inhjbitor, c1 esterase inhkbitor, c1 esterase inhobitor, c1 esterase inh9bitor, c1 esterase inh8bitor, c1 esterase inhivitor, c1 esterase inhinitor, c1 esterase inhihitor, c1 esterase inhigitor, c1 esterase inhibutor, c1 esterase inhibjtor, c1 esterase inhibktor, c1 esterase inhibotor, c1 esterase inhib9tor, c1 esterase inhib8tor, c1 esterase inhibiror, c1 esterase inhibifor, c1 esterase inhibigor, c1 esterase inhibiyor, c1 esterase inhibi6or, c1 esterase inhibi5or, c1 esterase inhibitir, c1 esterase inhibitkr, c1 esterase inhibitlr, c1 esterase inhibitpr, c1 esterase inhibit0r, c1 esterase inhibit9r, c1 esterase inhibitoe, c1 esterase inhibitod, c1 esterase inhibitof, c1 esterase inhibitot, c1 esterase inhibito5, c1 esterase inhibito4, 1 esterase inhibitor, c esterase inhibitor, c1esterase inhibitor, c1 sterase inhibitor, c1 eterase inhibitor, c1 eserase inhibitor, c1 estrase inhibitor, c1 estease inhibitor, c1 esterse inhibitor, c1 esterae inhibitor, c1 esteras inhibitor, c1 esteraseinhibitor, c1 esterase nhibitor, c1 esterase ihibitor, c1 esterase inibitor, c1 esterase inhbitor, c1 esterase inhiitor, c1 esterase inhibtor, c1 esterase inhibior, c1 esterase inhibitr, c1 esterase inhibito, 1c esterase inhibitor, c 1esterase inhibitor, c1e sterase inhibitor, c1 seterase inhibitor, c1 etserase inhibitor, c1 esetrase inhibitor, c1 estrease inhibitor, c1 estearse inhibitor, c1 estersae inhibitor, c1 esteraes inhibitor, c1 esteras einhibitor, c1 esterasei nhibitor, c1 esterase nihibitor, c1 esterase ihnibitor, c1 esterase inihbitor, c1 esterase inhbiitor, c1 esterase inhiibtor, c1 esterase inhibtior, c1 esterase inhibiotr, c1 esterase inhibitro, cc1 esterase inhibitor, c11 esterase inhibitor, c1 esterase inhibitor, c1 eesterase inhibitor, c1 essterase inhibitor, c1 estterase inhibitor, c1 esteerase inhibitor, c1 esterrase inhibitor, c1 esteraase inhibitor, c1 esterasse inhibitor, c1 esterasee inhibitor, c1 esterase inhibitor, c1 esterase iinhibitor, c1 esterase innhibitor, c1 esterase inhhibitor, c1 esterase inhiibitor, c1 esterase inhibbitor, c1 esterase inhibiitor, c1 esterase inhibittor, c1 esterase inhibitoor, c1 esterase inhibitorr, etc.