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Hemoglobin A1C Testing in California

Below is a plain-language overview of the hemoglobin a1c testing. The Hemoglobin A1C test evaluates average blood sugar levels over the past few months. It's commonly used to assess diabetes management.

Sample typeBlood draw at a collection lab
ReferralNo referral required

What this test is

The Hemoglobin A1C test measures the percentage of glycated hemoglobin in the blood. This reflects average blood glucose levels over a period of about two to three months. It is a key indicator for monitoring long-term glucose control in individuals with diabetes.

What it measures

  • Hemoglobin A1C — reflects average blood glucose levels over the past 2-3 months

What the test involves

The test involves a standard blood draw, usually from a vein in the arm. The collected sample is then analyzed in a laboratory.

Why it is often ordered

Clinicians typically order this test to monitor the effectiveness of diabetes treatment plans. It helps in assessing how well blood sugar levels are being managed over time.

Preparation

Preparation instructions may vary, so it is important to follow the specific guidelines provided by the laboratory. Generally, no fasting is required.

How results are reported

Results are reported as a percentage, indicating the proportion of glycated hemoglobin in the blood. Reference ranges can vary depending on the laboratory.

Before you go

  • Test preparation instructions
  • Sample collection process
  • Result turnaround time

Cities

Hemoglobin A1C Testing in California communities

Choose your city for local context and to request this test.

Los Angeles12,121,244Hemoglobin A1C TestingSan Francisco3,290,197Hemoglobin A1C TestingSan Diego3,084,174Hemoglobin A1C TestingRiverside2,022,285Hemoglobin A1C TestingSacramento1,924,167Hemoglobin A1C TestingSan Jose1,729,879Hemoglobin A1C TestingFresno719,558Hemoglobin A1C TestingConcord640,270Hemoglobin A1C TestingBakersfield590,845Hemoglobin A1C TestingMission Viejo588,540Hemoglobin A1C TestingMurrieta509,526Hemoglobin A1C TestingLong Beach466,565Hemoglobin A1C TestingOakland437,548Hemoglobin A1C TestingStockton406,822Hemoglobin A1C TestingVictorville389,060Hemoglobin A1C TestingModesto382,994Hemoglobin A1C TestingLancaster381,732Hemoglobin A1C TestingOxnard366,330Hemoglobin A1C TestingIndio361,831Hemoglobin A1C TestingAnaheim348,204Hemoglobin A1C TestingAntioch322,796Hemoglobin A1C TestingSanta Rosa314,196Hemoglobin A1C TestingSanta Ana313,818Hemoglobin A1C TestingIrvine297,868Hemoglobin A1C TestingSanta Clarita275,230Hemoglobin A1C TestingChula Vista274,818Hemoglobin A1C TestingVisalia249,804Hemoglobin A1C TestingFremont231,502Hemoglobin A1C TestingSan Bernardino220,821Hemoglobin A1C TestingThousand Oaks211,045Hemoglobin A1C TestingMoreno Valley208,371Hemoglobin A1C TestingFontana208,087Hemoglobin A1C TestingSalinas199,290Hemoglobin A1C TestingHuntington Beach198,735Hemoglobin A1C TestingSanta Barbara198,240Hemoglobin A1C TestingGlendale196,512Hemoglobin A1C TestingHemet191,170Hemoglobin A1C TestingVallejo181,882Hemoglobin A1C TestingElk Grove175,510Hemoglobin A1C TestingOntario175,223Hemoglobin A1C TestingOceanside174,461Hemoglobin A1C TestingRancho Cucamonga173,946Hemoglobin A1C TestingGarden Grove172,708Hemoglobin A1C TestingPalmdale167,987Hemoglobin A1C TestingSanta Cruz165,933Hemoglobin A1C TestingHayward162,254Hemoglobin A1C TestingCorona157,844Hemoglobin A1C TestingMerced157,617Hemoglobin A1C TestingSunnyvale155,550Hemoglobin A1C TestingPomona151,592Hemoglobin A1C TestingEscondido151,443Hemoglobin A1C TestingTorrance147,156Hemoglobin A1C TestingRoseville145,687Hemoglobin A1C TestingFairfield145,163Hemoglobin A1C TestingFullerton142,964Hemoglobin A1C TestingSanta Maria142,230Hemoglobin A1C TestingOrange139,195Hemoglobin A1C TestingPasadena138,771Hemoglobin A1C TestingYuba City129,536Hemoglobin A1C TestingSanta Clara127,922Hemoglobin A1C Testing