Do I need a doctor's order to test my ldh?

No. TestWell's licensed physician network reviews and approves your order — usually within minutes. You can place an order online without an in-person visit or a referral from your own doctor.

How long does it take to get LDH results?

Most LDH results are available in 1–3 business days after your specimen arrives at the lab. You'll get an email the moment your results are ready, with everything viewable in your TestWell portal.

How much does a LDH test cost?

Our LDH (Lactate Dehydrogenase) starts at $19.99. That's the all-in price — no copays, no insurance hoops, no surprise bills. HSA and FSA cards are accepted.

Do I need to fast before my LDH test?

Fasting is not required for the LDH test. You can have your blood drawn any time of day.

Which lab will process my LDH test?

Your test will be processed by Quest Diagnostics, Labcorp, or BioReference depending on which is closest to you and which lab carries the test. All three are CLIA-certified and trusted by hospitals nationwide. You'll choose your lab during checkout from 4,000+ locations.

Metabolic Health

LDH levels: what's normal, high and low

An enzyme released when cells are damaged. Non-specific — many tissues contain it.

Physician reviewed

Results in 1–3 days

4,000+ lab locations

Medically reviewed by Youmna DiStefano, MD · Last reviewed September 2026

The short answer

LDH is measured with a standard blood draw; no fasting is needed. A typical reference range is 122 – 222 U/L. At TestWell it's $19.99 all-in as LDH (Lactate Dehydrogenase), results in 1–3 business days, drawn at Quest or Labcorp. An out-of-range result is a prompt to look closer, not a diagnosis.

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LDH (Lactate Dehydrogenase)

$19.99all-in · no hidden fees

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Units: U/L / IU/L
Sample: Blood draw
Fasting: Not required
Results: 1–3 business days
Price: $19.99
Labs: Quest or Labcorp · BioReference in NY/NJ

LDH Reference Range

These are the typical adult reference ranges used by major US labs. Your report will include the specific range used by the lab that processed your sample.

Population	Range
age 18+	122 – 222 U/L

Reference ranges are educational. Always interpret your result with the specific range printed on your lab report and discuss anything outside the range with a clinician.

Tools: look up another marker's range · convert lab units

What your LDH result may mean

Higher than range

Can reflect tissue injury anywhere — heart, liver, muscle, red cell breakdown, or certain cancers.

What a high LDH means: causes, symptoms, next steps →

Educational only — not a diagnosis. Many factors can influence a single result. Discuss anything that concerns you with a healthcare provider.

How do you get a LDH test?

Order online, a licensed physician reviews the requisition, and you walk into a nearby lab for the draw. LDH is available on its own or inside these panels — panels cost less per marker when you want the fuller picture.

Option	Includes	Price	Per marker
LDH (Lactate Dehydrogenase)	This marker only	$19.99	$19.99
Comprehensive Anemia Workup	8 tests	$169.99	$21.25
Men's Cancer Screening Panel	12 tests	$299.99	$25.00
Women's Cancer Screening Panel	12 tests	$299.99	$25.00

Quest vs. Labcorp for LDH: which lab should you pick?

Both are CLIA-certified national labs and the result is clinically equivalent, so pick whichever location is closer. Your report will print that lab's own reference range, which can differ slightly from the table above.

Lab	Available	Price	Notes
Quest Diagnostics	Yes	$19.99	Choose Quest at checkout; walk-in patient service centers in every state TestWell serves outside NY and NJ.
Labcorp	Yes	$19.99	Choose Labcorp at checkout; walk-in patient service centers in every state TestWell serves outside NY and NJ.
BioReference (NY & NJ)	Yes	$20.99	New York and New Jersey orders route here automatically — state rules keep Quest and Labcorp from accepting self-ordered draws.

Need help choosing a location? Use the lab finder to see draw sites near your ZIP.

Sources

Related Metabolic Health biomarkers

Markers commonly tested alongside LDH.

Glucose Creatinine eGFR BUN ALT AST

Frequently asked

Can reflect tissue injury anywhere — heart, liver, muscle, red cell breakdown, or certain cancers. A single result above the reference range is a prompt to look closer with a clinician — often a repeat test and related markers — not a diagnosis on its own.

Ready to test your ldh?

Order in two minutes, get physician-approved, and visit a lab the same day. Starts at $19.99.

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