Hemoglobin, Free, Urine
Free hemoglobin in urine, a marker of red blood cells breaking down inside the bloodstream.
- Schedule online, results delivered to your dashboard
- Clear guidance, results reviewed by a real clinician
- Follow-up care available
- HSA/FSA eligible
- Drawn at a CLIA/CAP-accredited lab near you ·
Pre-test considerations
No fasting required. A random urine sample is used. Heavy exercise shortly before collection can cause mechanical red-cell breakdown and raise the result, so avoid intense activity beforehand if hemolysis is the question. Note any recent transfusion, which is directly relevant to interpretation.
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What this test is for
Free hemoglobin in urine appears when red blood cells rupture inside the circulation faster than the body's binding proteins can clear the released hemoglobin, which then spills through the kidneys into the urine. A positive result points to intravascular hemolysis, with causes including transfusion reactions, paroxysmal nocturnal hemoglobinuria, mechanical destruction from heart valves or hard exercise, certain infections, and severe burns. It is distinct from hematuria, where intact red blood cells enter the urine from bleeding in the urinary tract, and it is interpreted alongside blood markers of hemolysis such as haptoglobin, LDH, and the reticulocyte count.
This measures free hemoglobin in a urine sample. It is a different test from the blood hemoglobin level (the standard anemia and oxygen-carrying measure), HbA1c (average blood sugar), and hemoglobin fractionation (which identifies hemoglobin variants like sickle and thalassemia traits).
What to expect
- 1 Book instantly
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- 2 Quick lab visit
Testing to fit your busy schedule, usually 15 minutes or less. Walk-in and appointments available.
- 3 Fast, dashboard-delivered results
Your results post straight to your dashboard as soon as the lab completes them.
- 4 Expert guidance
Included with Mito membership. A clinician reviews your results and your personalized action plan follows, with clear next steps.
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Frequently asked questions
View all FAQsHow does pricing work?
Every test shows the member price next to the standard non-member price, so you can see what membership saves you. The member price is our cost — covering the lab and what it takes to run the service — never a profit on the test itself; Mito makes its money on the $9 membership, not on marking up your tests. Membership is $9/mo, and you still pay the lab’s order fee. Prices are itemized before you pay, with no hidden fees.
Where do I get tested?
Choose a partner lab (Quest, Labcorp, or BioReference) at checkout. If your cart spans multiple tests, we consolidate the whole order onto a single lab so you only make one visit.
Is this eligible for HSA/FSA?
Yes. This test is HSA/FSA eligible, and you can pay with your HSA/FSA card at checkout.
When will I get my results?
Your results post to your dashboard once your lab completes them, then a clinician reviews them and your full analysis and personalized action plan (with clear next steps) follow. Turnaround varies by test: specialty assays and at-home kits take longer, and each test shows its expected turnaround before you buy.
Do I need a doctor’s order?
No. Mito provides the lab order for you, so you can book and get tested without a separate doctor visit.
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