Know which blood test to order, and where to order it.
Read plain-English guides to 82 lab tests, then see which online seller fits you. Skip the doctor visit. The seller includes the order.
"My A1C came back 5.9. What does that mean?"
5.9 falls in the prediabetes range. Share it with a clinician, who may confirm it with a repeat test.
Read the A1C guideStart with what's on your mind
15 areas · 82 tests- 013 testsFull checkupCBC, CMP, annual panel
- 022 testsBlood sugarA1C, urine albumin
- 038 testsHeart healthLipid panel, ApoB, Lp(a)
- 0410 testsThyroidTSH, free T4, TPO
- 059 testsVitamins and ironVitamin D, B12, ferritin
- 0611 testsHormonesTestosterone, estradiol
- 078 testsSexual healthSTD panel, HIV, syphilis
- 083 testsKidney and urineUrinalysis, urine culture
- 093 testsLiverLiver panel, GGT
- 1010 testsInflammation and autoimmuneCRP, ANA, celiac
- 112 testsProstatePSA total and free
- 122 testsPregnancy and fertilityhCG, blood type
- 136 testsImmunity and infectionTiters, TB
- 144 testsBlood clottingPT/INR, D-dimer
- 151 testAllergiesFood allergy panel
How ordering works
Pick your tests
Use a guide or the chooser to land on the right test or panel.
Order online
Pay the seller. Their physician signs the lab order for you.
Visit a lab
Walk into a Quest or Labcorp site near you. The draw takes minutes.
Read your results
Results arrive online, often in 1 to 3 days. Check them against our range guides.
Decide what to order, and from whom
Each tool runs in your browser. We never see your answers.
6 sellers, side by side
Each one includes the physician order and sends you to a lab for the draw. Filter them by what matters to you.
Questions people ask
Do I need a doctor to order a lab test?
In most states, no. Online lab sellers include an independent physician order in the price. You pay online, then visit a partner lab such as Quest or Labcorp. A few states restrict direct ordering, so check availability at checkout.
Will insurance pay for it?
Usually not. These orders cost a fixed cash price, though many sellers accept HSA or FSA cards. Confirm with the seller.
Does Zenlo see my results?
No. Zenlo Health sells no tests and collects no health data. The seller and the lab handle your order and results.
How does Zenlo make money?
Some sellers pay us a commission when you order through our links, at no extra cost to you. Commissions never change which tests or sellers we suggest.
Who checks the medical content?
Our editorial team writes each guide from major guidelines, and a practicing physician reviews each guide before it shows a Medically reviewed label. Every page is education only, not medical advice.
Get a short list in three questions
Tell us your goal and what matters when you buy. We suggest tests and the sellers that fit.