What is Castle Biosciences, Inc.'s Shariah compliance score?

Castle Biosciences, Inc.'s (CSTL) compliance score is being calculated. Check HalalScreener.app for the latest AAOIFI screening results.

Does Castle Biosciences, Inc. pass AAOIFI screening?

Castle Biosciences, Inc. (CSTL) does not pass AAOIFI Shariah screening. AAOIFI requires: (1) no primary involvement in prohibited activities like alcohol, gambling, or conventional banking, (2) debt-to-market-cap below 30% (CSTL: 1.4%), (3) interest-bearing deposits below 30% (CSTL: 40.8%), and (4) prohibited income below 5% (CSTL: 3.5%). HalalScreener provides free AAOIFI screening for 10,000+ stocks at halalscreener.app.

How much purification is needed for Castle Biosciences, Inc. stock?

Castle Biosciences, Inc. (CSTL) has a non-permissible income ratio of 3.52%. Muslim investors should purify this percentage of any dividends received and capital gains realized from CSTL shares by donating it to charity. HalalScreener's purification calculator at halalscreener.app/en/purification automates this calculation using the latest financial data.

Where can I screen Castle Biosciences, Inc. for Shariah compliance for free?

HalalScreener (halalscreener.app) offers free Shariah compliance screening for Castle Biosciences, Inc. (CSTL) and 10,000+ other US-listed stocks, ETFs, and 100+ cryptocurrencies. The screening uses AAOIFI Standard No. 21 and shows all financial ratios transparently. No credit card or signup required for basic screening. HalalScreener also includes an AI Islamic Scholar for follow-up questions about CSTL's compliance across different madhabs (Hanafi, Shafi'i, Maliki, Hanbali, Ja'fari).

CSTL: Is Castle Biosciences, Inc. Halal?

Castle Biosciences, Inc.

NASDAQHealthcareUS

$24.23

+0.87%

Market Cap: 734.9M

Compliance Status

Not Halal

Screened on Jul 17, 2026 · AAOIFI Standard 21

Non-Compliant

0Score

Is Castle Biosciences, Inc. (CSTL) halal? Not Halal. Based on AAOIFI screening, Castle Biosciences, Inc. passes the business activity screen but fails financial ratio screens with a compliance score of 0/100 (Grade: F).

AvoidBorderlineClean

Business activity

What the company sells is permissible.

Passed

Company debt

Well clear of the limit

How much the company borrows, compared to its total value. AAOIFI allows up to 30%.

1.4% of 30.0% limit

What this means for you

Most scholars advise not holding CSTL

It does not pass AAOIFI Shariah screening.

See halal alternatives from the same sector further down this page

About Castle Biosciences, Inc.

Castle Biosciences, Inc. functions as a commercial-stage diagnostics firm, with its primary objective being the provision of both diagnostic and prognostic testing services, specifically targeting various dermatological cancers. Their flagship product, DecisionDx-Melanoma, represents an advanced multi-gene expression profile (GEP) assay engineered to assess the probability of metastasis in patients afflicted with invasive cutaneous melanoma. In addition to their leading solution, the company has created several other specialized, proprietary tests. Among these is DecisionDx-UM, a GEP test tailored to forecast the risk of metastasis for individuals with uveal melanoma, a less common malignancy of the eye. Another key offering is DecisionDx-SCC, a distinctive 40-gene expression profile test that utilizes a patient's unique tumor biology to predict their specific risk of squamous cell carcinoma metastasis, particularly for those presenting with recognized risk factors. Moreover, they offer DecisionDx DiffDx-Melanoma and myPath Melanoma, both proprietary GEP tests employed to assist in the accurate diagnosis of ambiguous pigmented lesions. These specialized testing services are provided by Castle Biosciences to patients predominantly through their healthcare providers. The organization commenced operations in 2007 and maintains its corporate headquarters in Friendswood, Texas.

Sector: Healthcare · Industry: Medical - Diagnostics & Research

Shariah Compliance Status

AAOIFI Standard 21Updated Jul 17, 2026

Compliance History

Not Halal, unchanged since May 2026.

No status changes recorded since we began tracking.

Tracked since May 2026. Updates automatically on each re-screen.

Fiscal: Q1 2026Data source: EDGAR

Halal Alternatives in Healthcare

This stock is not Shariah-compliant. Here are halal alternatives from the same sector, ranked by compliance score:

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Supercomnet Technologies Bhd

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0002.KLA+

Kotra Industries Bhd

$3.73

+0.00%

0075.KLA+

LYC Healthcare Bhd

$0.01

+0.00%

0101.KLA+

TMC Life Sciences Bhd

$0.47

+0.00%

0155.KLA+

Malaysian Genomics Resource Centre Bhd

$0.29

+0.00%

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Frequently Asked Questions

Is Castle Biosciences, Inc. (CSTL) halal to invest in?

Castle Biosciences, Inc. (CSTL) is rated Not Halal under AAOIFI Standard 21 screening. It fails either the business activity screen (primary involvement in prohibited sectors such as conventional banking, alcohol, or gambling) or one of the quantitative financial ratio thresholds. Muslim investors should avoid or exit this position.

Why did Castle Biosciences, Inc. get a F compliance rating?

Castle Biosciences, Inc. (CSTL) received a grade of F (Non-Compliant) based on three AAOIFI Standard 21 financial ratios: debt-to-market-cap of 1.4% (limit 30%); interest-bearing deposits of 40.8% (limit 30%); prohibited income of 3.52% (limit 5%). The grade reflects the margin of safety across all three ratios relative to their thresholds.

What could change Castle Biosciences, Inc.'s Shariah verdict?

Castle Biosciences, Inc.'s verdict is re-evaluated at each annual re-screen. Three events could change it: (1) the debt-to-market-cap ratio crossing 30%, typically from new debt issuance or a major drop in share price; (2) interest-bearing deposits exceeding 30% of market cap; or (3) prohibited revenue (alcohol, gambling, conventional finance, etc.) exceeding 5% of total revenue. Verdict flips are tracked in the compliance history section above.

How often is Castle Biosciences, Inc. re-screened for Shariah compliance?

Castle Biosciences, Inc. (CSTL) is re-screened annually using the most recent full-year financial data from SEC filings. HalalScreener also triggers an on-demand re-screen whenever the stored data is more than 7 days old, ensuring the ratios reflect the latest available financial statements. Last screened: Jul 17, 2026.

Screened according to AAOIFI Standard No. 21 · For informational purposes only. Consult a qualified Islamic finance advisor before investing.

Disclaimer: This screening is for informational purposes only and does not constitute financial, legal, or religious advice. Compliance is evaluated using AAOIFI financial standards (debt, deposits, and prohibited income ratios) and publicly available data. Ethical, political, social, or environmental considerations are outside the scope of this screening. Individual scholars and methodologies may differ. Always consult a qualified Islamic finance advisor before making investment decisions.