Cystatin C with eGFR from Marek Health

Name: Cystatin C with eGFR
Brand: Marek Health
Price: 40 USD

Labbrary Test GradeUseful

Your Fit Score

050100?

Not calculated

Answer five questions to see how this panel matches your goals, budget, collection preferences, access, and support needs.

Calculate my fit

Labbrary's review, Fit Score, and basic comparison are free. The provider's panel, shipping, collection, clinician review, and other services are separate. About 2 minutes. No account required.

Check cystatin C with eGFR through Quest blood collection; 12-hour fasting is recommended.

Current price: $40 $50 with fees
Sample: Blood
Turnaround: 14 days
Access: Direct Lab, Lab Visit, Order Online

Evidence & Key Facts

Source collectedLast source check September 9, 2026

Evidence basis. This named result reflects the sources and verification evidence listed on this page as of the date shown.

Best for

Kidney Health

Standout strength

Measures cystatin C in blood and reports an associated estimated glomerular filtration rate (eGFR).

Important watch-out

Marek adds a $10 venipuncture fee to orders of $199 or less and waives it on orders over $199. No additional payment is required at the lab. Lab sales are final and non-refundable.

Cystatin C with eGFR from Marek Health

Labbrary Test GradeUseful

Your Fit Score

050100?

Not calculated

Answer five questions to see how this panel matches your goals, budget, collection preferences, access, and support needs.

Calculate my fit

Labbrary's review, Fit Score, and basic comparison are free. The provider's panel, shipping, collection, clinician review, and other services are separate. About 2 minutes. No account required.

Check cystatin C with eGFR through Quest blood collection; 12-hour fasting is recommended.

Current price: $40 $50 with fees
Sample: Blood
Turnaround: 14 days
Access: Direct Lab, Lab Visit, Order Online

Evidence & Key Facts

Source collectedLast source check September 9, 2026

Evidence basis. This named result reflects the sources and verification evidence listed on this page as of the date shown.

Best for

Kidney Health

Standout strength

Measures cystatin C in blood and reports an associated estimated glomerular filtration rate (eGFR).

Important watch-out

Marek adds a $10 venipuncture fee to orders of $199 or less and waives it on orders over $199. No additional payment is required at the lab. Lab sales are final and non-refundable.

Labbrary+

The Test Grade. The Reason Behind It.

Potentially useful for the right buyer, with meaningful evidence, coverage, transparency, access, cost, terms, or privacy tradeoffs to review.

A lower grade does not mean a panel is a bad personal fit. Your Fit Score can be higher when its purpose, price, sample, access, or support matches what you need.

Explore the Full Methodology

Labbrary Test GradeUseful

Next step

Check the panel or research the provider

Prices, availability, and ordering requirements can change. Confirm the current details before purchasing.

View Exact Panel on Provider Site View Marek Health profile

Scope, both directions

Inside the Panel. Beyond the Name.

Named measurements

Cystatin C with eGFR

Measured categories and focus areas

Kidney Health

Important limits and omissions

Cystatin C with eGFR is named, but the assay method, eGFR equation, exact performing laboratory and analytical performance have not been established. Comparative accuracy versus creatinine is not independently assessed.
Cystatin C with eGFR is the only named inclusion. Creatinine, urine albumin and an albumin/creatinine ratio are not included. The derived eGFR is not an additional directly measured analyte.
Results are emailed when available. Guided Optimization is a separate program with treatment eligibility requirements. An included consultation, individual interpretation service, actual sample report, reference-range explanation and follow-up plan have not been established for this test purchase.
Comparative value and clinical data or specimen privacy have not been fully assessed.

No broader panel in the Labbrary catalog lists every biomarker on this one for a lower listed price.

Counted among one-time lab-draw listings with a published price, matched by published biomarker names. That doesn’t mean the tests are equivalent. Updated October 2, 2026.

The full breakdown

Eight Dimensions.
One Named Result.

Open any row for the reasoning and evidence behind the named result.

Seller is Marek Diagnostics; the ordering clinician is Marek-arranged (provider reviews and approves test requests; no buyer clinician visit required) where stated. Collection route is the Quest Diagnostics laboratory system. A Quest draw location or the Marek relationship does not prove the exact performing facility, the assay method, or offer-specific analytical performance, which remain unpublished. Limitation: Seller is Marek Diagnostics; the ordering clinician is Marek-arranged (provider reviews and approves test requests; no buyer clinician visit required) where stated. Collection route is the Quest Diagnostics laboratory system. A Quest draw location or the Marek relationship does not prove the exact performing facility, the assay method, or offer-specific analytical performance, which remain unpublished.

Exact named measurement scope per the product page title and description. Limitation: No additional limitation was recorded in the authority row.

Named analytes per the exact offer; panel boundaries per the product page. Limitation: No additional limitation was recorded in the authority row.

Result delivery format partially documented. Limitation: No additional limitation was recorded in the authority row.

Exact price, purchase route, and ordering model on the product page; performing lab assignment unpublished. Limitation: No additional limitation was recorded in the authority row.

Online ordering with provider-approved test requests; Quest collection; state restrictions apply. Limitation: No additional limitation was recorded in the authority row.

Exact-offer price on the product page; refund and draw-fee terms per shared policies. Limitation: No additional limitation was recorded in the authority row.

Shared Marek privacy policy governs order data; specimen and result retention unresolved. Limitation: No additional limitation was recorded in the authority row.

What it asks of you

Sample and fulfillment journey

Order

Confirmed

Order Cystatin C with eGFR online for $40 before any checkout fees. Healthcare-provider review and approval is arranged without an office visit.

Panel-specific source · Source dated September 9, 2026

Collect

Confirmed

Order online for healthcare-provider review and approval, then provide a blood sample at a Quest location. No healthcare-provider office visit is required. Confirm preparation and collection instructions for this exact test. Fasting is recommended for 12 hours before the blood draw. Confirm the preparation instruction with the ordering provider; the source describes a recommendation.

Panel-specific source · Source dated September 9, 2026

Lab

Confirmed

Results typically arrive within 14 business days. Approximately two weeks is a general estimate that varies with test size and complexity; it is not a guaranteed calendar-day deadline. The exact laboratory performing the assay has not been independently identified.

Panel-specific source · Source dated September 9, 2026

Report

Partially confirmed

Results are emailed when available. Guided Optimization is a separate program with treatment eligibility requirements. An included consultation, individual interpretation service, actual sample report, reference-range explanation and follow-up plan have not been established for this test purchase.

Panel-specific source · Source dated September 9, 2026

Under the hood

Follow the Evidence.

Every published claim should trace to a dated source. Missing evidence remains visible instead of being filled with assumptions.

Source 1Recorded for this record. Last source check September 9, 2026.View source

Source 2Recorded for this record. Last source check September 9, 2026.View source

Source 3Recorded for this record. Last source check September 9, 2026.View source

Source 4Recorded for this record. Last source check September 9, 2026.View source

Source 5Recorded for this record. Last source check September 9, 2026.View source

Source 6Recorded for this record. Last source check September 9, 2026.View source

Source 7Recorded for this record. Last source check September 9, 2026.View source

Source 8Recorded for this record. Last source check September 9, 2026.View source

True total cost

The Price. Plus the Details.

Pricing for Cystatin C with eGFR
Item	Current disclosed price	Note
Panel	$40	Verify the checkout total, shipping, and collection fees before ordering.
Venipuncture fee	+ $10	Per order, added at checkout. Checked October 1, 2026. Source
Total at checkout	$50	Listed price plus the required fees above, before tax and any optional services.
HSA/FSA payment	Not confirmed	HSA/FSA payment eligibility has not been confirmed from provider documentation.
Optional services	Not confirmed	Clinician review, subscriptions, and retesting discounts are listed only when documented.

Price status. This record shows disclosed pricing. Checkout costs can change and should be verified before purchase.

Your data

Your Data. Your Questions.

Privacy details are scored only when source documentation is available. Unconfirmed retention, deletion, research use, or marketing practices remain unconfirmed.

Reading the labels

What Has Been Checked?

Source collected

Evidence labels stay separate from the Test Grade. They show how much source support exists for the evaluation.

The balance

The Strengths. The Tradeoffs.

Strengths

Measures cystatin C in blood and reports an associated estimated glomerular filtration rate (eGFR).
Order online for provider approval and blood collection at Quest.
The lab requisition is valid for six months from purchase.

Watch-outs

Marek adds a $10 venipuncture fee to orders of $199 or less and waives it on orders over $199. No additional payment is required at the lab. Lab sales are final and non-refundable.
Eligible US residents need a valid US driver license or state-issued ID. Hawaii and US territories are excluded, and orders are unavailable to residents of New York, New Jersey and Rhode Island. Massachusetts buyers should confirm that the collection site accepts the order before paying.
Results typically arrive within 14 business days. Approximately two weeks is a general estimate that varies with test size and complexity; it is not a guaranteed calendar-day deadline.
Cystatin C with eGFR is named, but the assay method, eGFR equation, exact performing laboratory and analytical performance have not been established. Comparative accuracy versus creatinine is not independently assessed.
Cystatin C with eGFR is the only named inclusion. Creatinine, urine albumin and an albumin/creatinine ratio are not included. The derived eGFR is not an additional directly measured analyte.
Results are emailed when available. Guided Optimization is a separate program with treatment eligibility requirements. An included consultation, individual interpretation service, actual sample report, reference-range explanation and follow-up plan have not been established for this test purchase.
Fasting is recommended for 12 hours before the blood draw. Confirm the preparation instruction with the ordering provider; the source describes a recommendation.

Take it with you

The Test Truth Card

The key facts from this review in one compact card.

Same biomarkers, other sellers

Other Ways to Buy This Test.

1 other listing in the Labbrary catalog publishes this exact biomarker list, with a lab draw.

Cystatin C with Estimated Glomerular Filtration Rate (eGFR) Blood Test

Mito Health

Useful

Measures cystatin c with calculated eGFR for a kidney-function assessment. Order online for a partner-lab blood draw; this is not a urine test or a direct filtration measurement.

Price: $21.02
Turnaround: 5 days

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Verification History

September 9, 2026Recorded source date.Source collected

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Cystatin C with eGFR from Marek Health

The Test Grade. The Reason Behind It.

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