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South · Vitamin K1 Test – Vitamin Deficiency

Vitamin K1 Test – Vitamin Deficiency in Oklahoma

This page explains the vitamin k1 test – vitamin deficiency, what it measures, and how to order it. A Vitamin K1 test measures the level of phylloquinone in your blood to help assess whether you may have a deficiency. It is typically used when a clinician suspects a problem with blood clotting or fat absorption.

Sample typeBlood and/or urine at a collection lab
ReferralIncluded — no referral from your own doctor needed

Lab requirements in Oklahoma

Here is what you need before ordering and completing the Vitamin K1 Test – Vitamin Deficiency in OK. Review each item and confirm the details with the collection lab.

Physician's order
Included. A physician's order is required for lab testing and is provided for you by our partner's physicians — no referral from your own doctor is needed.
Fasting
Fasting is required for this test — follow the collection lab's instructions.
Preparation
Follow the collection lab's instructions regarding fasting, medications, or timing of the draw. Because preparation can vary, always confirm specific steps with the lab before your…
Sample & visit
A blood and/or urine sample is collected; the visit usually takes about 10 minutes.
Identification
Bring the lab requisition form from your account. The collection lab may also ask for a government-issued photo ID.
Turnaround
1-3 business days
Availability
Our partner lab does not serve ND, RI, NY, NJ, MD or HI. Confirm availability for your location with the collection lab.

Before you go

  • Order your test before visiting a lab, then use the requisition form in your account.
  • Print the requisition form, or fax it to the lab directly from your account.
  • No scheduling is needed — visit the collection lab during its normal business hours.
  • A blood and/or urine sample is collected; the visit usually takes about 10 minutes.
  • Bring a government-issued photo ID in case the lab requests it.
  • Results are posted to your secure account within 1–3 business days.

Requirements are summarized from our partner lab's published policies. Preparation and availability can change — confirm current instructions with the collection lab before your visit.

What this test is

This blood test measures Vitamin K1, also called phylloquinone, which is a fat-soluble vitamin needed for normal blood clotting. The test helps evaluate whether low levels might explain unusual bleeding or bruising. It is not a routine screening test and is usually ordered when there is a specific reason to check Vitamin K status.

What it measures

  • Vitamin K1 (phylloquinone) — reflects the amount of this fat-soluble vitamin circulating in your blood
  • Prothrombin time (PT) or INR — sometimes ordered together to assess blood clotting function
  • Other fat-soluble vitamins — may be checked if malabsorption is suspected

What the test involves

The test requires a standard blood draw from a vein in your arm, usually collected into a tube that protects the sample from light. No special preparation beyond the collection lab's instructions is typically needed.

Why it is often ordered

A clinician may order this test if you have unexplained bleeding, easy bruising, or a condition that affects fat absorption, such as certain digestive disorders. It can also be used to monitor Vitamin K status in people with liver disease or those taking blood-thinning medications.

Preparation

Follow the collection lab's instructions regarding fasting, medications, or timing of the draw. Because preparation can vary, always confirm specific steps with the lab before your appointment.

How results are reported

Results are reported as a numeric value for Vitamin K1, often in nanograms per milliliter, and are interpreted alongside your symptoms and other tests. Reference ranges vary by laboratory, so your result should be discussed with your clinician in the context of the lab's own range.

Before you go

  • Whether fasting or dietary restrictions are needed before the draw
  • If any medications or supplements should be paused before testing
  • How and when results will be shared with you

Cities

Vitamin K1 Test – Vitamin Deficiency in Oklahoma communities

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

Oklahoma City994,284Vitamin K1 Test – Vitamin DeficiencyTulsa715,983Vitamin K1 Test – Vitamin DeficiencyNorman125,745Vitamin K1 Test – Vitamin DeficiencyBroken Arrow112,751Vitamin K1 Test – Vitamin DeficiencyEdmond93,522Vitamin K1 Test – Vitamin DeficiencyLawton91,247Vitamin K1 Test – Vitamin DeficiencyMoore62,633Vitamin K1 Test – Vitamin DeficiencyMidwest City58,146Vitamin K1 Test – Vitamin DeficiencyEnid51,129Vitamin K1 Test – Vitamin DeficiencyStillwater48,055Vitamin K1 Test – Vitamin DeficiencyOwasso37,559Vitamin K1 Test – Vitamin DeficiencyMuskogee37,214Vitamin K1 Test – Vitamin DeficiencyBartlesville37,074Vitamin K1 Test – Vitamin DeficiencyShawnee31,237Vitamin K1 Test – Vitamin DeficiencyBixby28,091Vitamin K1 Test – Vitamin DeficiencyJenks25,210Vitamin K1 Test – Vitamin DeficiencyArdmore24,829Vitamin K1 Test – Vitamin DeficiencyPonca City24,499Vitamin K1 Test – Vitamin DeficiencyYukon23,697Vitamin K1 Test – Vitamin DeficiencyDuncan22,664Vitamin K1 Test – Vitamin DeficiencySapulpa21,853Vitamin K1 Test – Vitamin DeficiencyDel City21,778Vitamin K1 Test – Vitamin DeficiencyBethany20,542Vitamin K1 Test – Vitamin DeficiencySand Springs19,935Vitamin K1 Test – Vitamin DeficiencyMustang19,847Vitamin K1 Test – Vitamin DeficiencyClaremore19,173Vitamin K1 Test – Vitamin DeficiencyAltus18,825Vitamin K1 Test – Vitamin DeficiencyDurant18,358Vitamin K1 Test – Vitamin DeficiencyMcAlester18,225Vitamin K1 Test – Vitamin DeficiencyEl Reno17,164Vitamin K1 Test – Vitamin DeficiencyAda16,804Vitamin K1 Test – Vitamin DeficiencyTahlequah16,213Vitamin K1 Test – Vitamin DeficiencyChickasha15,655Vitamin K1 Test – Vitamin DeficiencyGlenpool13,446Vitamin K1 Test – Vitamin DeficiencyMiami12,997Vitamin K1 Test – Vitamin DeficiencyGuymon12,804Vitamin K1 Test – Vitamin DeficiencyWoodward12,246Vitamin K1 Test – Vitamin DeficiencyChoctaw12,130Vitamin K1 Test – Vitamin DeficiencyWeatherford12,034Vitamin K1 Test – Vitamin DeficiencyElk City11,743Vitamin K1 Test – Vitamin DeficiencyOkmulgee11,330Vitamin K1 Test – Vitamin DeficiencyNewcastle10,970Vitamin K1 Test – Vitamin DeficiencyGuthrie10,767Vitamin K1 Test – Vitamin DeficiencyWarr Acres10,443Vitamin K1 Test – Vitamin DeficiencyCoweta9,696Vitamin K1 Test – Vitamin DeficiencyThe Village9,510Vitamin K1 Test – Vitamin DeficiencyPryor Creek9,439Vitamin K1 Test – Vitamin DeficiencyPoteau8,741Vitamin K1 Test – Vitamin DeficiencyClinton8,612Vitamin K1 Test – Vitamin DeficiencyBlanchard8,511Vitamin K1 Test – Vitamin DeficiencySallisaw8,503Vitamin K1 Test – Vitamin DeficiencySkiatook8,396Vitamin K1 Test – Vitamin DeficiencyCushing8,201Vitamin K1 Test – Vitamin DeficiencyCatoosa7,821Vitamin K1 Test – Vitamin DeficiencyCollinsville7,765Vitamin K1 Test – Vitamin DeficiencyWagoner7,694Vitamin K1 Test – Vitamin DeficiencyTuttle7,412Vitamin K1 Test – Vitamin DeficiencyPiedmont7,306Vitamin K1 Test – Vitamin DeficiencySeminole7,131Vitamin K1 Test – Vitamin DeficiencyNoble7,078Vitamin K1 Test – Vitamin Deficiency