Sectors & Industries HealthcareDiagnostics & Research
Best Diagnostic & Research Stocks to Buy Now (2025)
Top diagnostic & research stocks in 2025 ranked by overall Zen Rating. "A" Rated stocks have returned an average of +32.52% per year, and are the best diagnostic & research stocks to buy now. Learn More.

Industry: Diagnostics & Research

Growth Financials Momentum Sentiment Forecast Dividends Due Diligence

Diagnostics & Research is Zen Rated C and is the 73rd ranked industry out of 145 stock market industries

Ticker	Company	Price	Graham Fair Value	Graham Fair Value %	P/E	Forward P/E	P/S	P/B	PEG	Free Cash Flow	Free Cash Flow Yield	Book Value	BVPS	EV	EV/EBITDA
SHC	SOTERA HEALTH CO	$15.35	$6.53	135.00%	170.56x	21.77x	3.93x	10.52x	0.95x	$105.89M	2.43%	$414.09M	1.46	$6.40B	15.38
CRL	CHARLES RIVER LABORATORIES INTERNATIONAL INC	$167.03	N/A	N/A	-129.48x	16.39x	2.04x	2.45x	N/A	$578.50M	7.05%	$3.35B	68.23	$10.82B	20.57
IDXX	IDEXX LABORATORIES INC	$616.15	$113.08	444.88%	50.84x	48.86x	12.27x	33.79x	5.43x	$774.34M	1.56%	$1.46B	18.14	$50.34B	35.97
LH	LABCORP HOLDINGS INC	$277.88	$150.78	84.30%	30.44x	17.05x	1.71x	2.73x	1.06x	$1.26B	5.46%	$8.47B	101.96	$28.99B	14.04
A	AGILENT TECHNOLOGIES INC	$136.62	$51.70	164.26%	31.92x	24.51x	5.72x	6.08x	1.91x	$1.09B	2.80%	$6.37B	22.43	$40.61B	22.60
EXAS	EXACT SCIENCES CORP	$58.34	N/A	N/A	-10.68x	162.06x	3.75x	4.47x	N/A	$169.62M	1.54%	$2.47B	13.07	$12.91B	-17.64
DHR	DANAHER CORP	$202.46	$82.22	146.24%	42.80x	26.05x	6.04x	2.77x	1.38x	$4.88B	3.37%	$52.33B	73.04	$159.37B	23.59
QGEN	QIAGEN NV	$46.85	$20.59	127.52%	27.56x	20.03x	4.98x	2.91x	1.64x	$498.54M	4.91%	$3.51B	16.18	$10.91B	15.25
MEDP	MEDPACE HOLDINGS INC	$501.22	$118.84	321.75%	36.27x	35.72x	6.42x	81.70x	4.90x	$579.82M	4.04%	$172.35M	6.03	$14.16B	26.60
IQV	IQVIA HOLDINGS INC	$198.17	$102.40	93.52%	28.43x	18.47x	2.17x	5.83x	1.20x	$2.01B	5.90%	$5.78B	33.63	$47.35B	14.17
NEOG	NEOGEN CORP	$6.04	N/A	N/A	-1.26x	24.16x	1.48x	0.62x	N/A	-$2.52M	-0.20%	$2.12B	9.75	$1.97B	-2.24
FLGT	FULGENT GENETICS INC	$22.51	N/A	N/A	-13.56x	-13.73x	2.27x	0.62x	N/A	-$59.91M	-8.71%	$1.12B	36.56	$601.61M	-18.28
DGX	QUEST DIAGNOSTICS INC	$184.07	$79.86	130.48%	21.73x	18.90x	1.96x	2.85x	2.26x	$1.22B	5.94%	$7.23B	64.54	$26.65B	13.13
RDNT	RADNET INC	$70.60	N/A	N/A	-353.00x	163.24x	2.75x	5.82x	N/A	$76.20M	1.45%	$932.31M	12.54	$6.44B	24.55
TMO	THERMO FISHER SCIENTIFIC INC	$524.80	$213.10	146.26%	30.30x	23.32x	4.59x	3.92x	1.75x	$6.22B	3.14%	$50.51B	133.63	$228.82B	20.30
MYGN	MYRIAD GENETICS INC	$7.50	N/A	N/A	-1.75x	-18.75x	0.83x	1.80x	N/A	-$50.00M	-7.21%	$388.10M	4.20	$778.03M	-2.24
MTD	METTLER TOLEDO INTERNATIONAL INC	$1,273.67	$345.40	268.75%	32.17x	30.32x	6.81x	-101.38x	4.16x	$848.80M	3.22%	-$258.79M	-12.51	$28.36B	23.32
TWST	TWIST BIOSCIENCE CORP	$31.19	N/A	N/A	-21.66x	-24.46x	5.17x	3.94x	N/A	-$68.71M	-3.67%	$478.20M	7.97	$1.77B	-30.16
ILMN	ILLUMINA INC	$93.86	N/A	N/A	11.85x	20.84x	3.44x	6.39x	N/A	$1.02B	6.95%	$2.26B	14.38	$16.01B	8.97
WAT	WATERS CORP	$331.00	$114.51	189.07%	29.74x	25.52x	6.47x	9.12x	2.49x	$619.36M	3.14%	$2.16B	36.29	$20.87B	19.74
XGN	EXAGEN INC	$10.95	N/A	N/A	-12.30x	-18.99x	3.92x	11.45x	N/A	-$15.98M	-6.92%	$21.03M	1.00	$236.11M	-20.59
NEO	NEOGENOMICS INC	$9.10	N/A	N/A	-11.23x	-34.56x	1.69x	1.38x	N/A	-$19.17M	-1.65%	$854.04M	6.68	$1.43B	-68.28
RVTY	REVVITY INC	$88.29	$54.47	62.08%	37.41x	18.14x	3.71x	1.36x	0.81x	$502.97M	4.85%	$7.56B	64.30	$12.63B	15.80
PRE	PRENETICS GLOBAL LTD	$13.89	N/A	N/A	-3.57x	-5.43x	3.64x	1.22x	N/A	N/A	N/A	$150.98M	11.40	$169.33M	N/A
PRPH	PROPHASE LABS INC	$0.53	N/A	N/A	-0.27x	-0.94x	6.58x	1.91x	N/A	-$10.97M	-50.19%	$11.44M	0.28	$29.55M	-1.54
ACRS	ACLARIS THERAPEUTICS INC	$1.87	N/A	N/A	-1.18x	-3.67x	12.90x	1.41x	N/A	-$12.35M	-5.40%	$144.07M	1.18	$172.13M	-1.33
GH	GUARDANT HEALTH INC	$64.22	N/A	N/A	-19.17x	-20.13x	9.62x	-26.22x	N/A	-$271.73M	-3.41%	-$305.48M	-2.46	$8.58B	-23.30
GRAL	GRAIL INC	$66.13	N/A	N/A	-5.44x	-4.94x	17.63x	1.03x	N/A	-$371.75M	-15.71%	$2.31B	64.67	$2.32B	-5.24
ICLR	ICON PLC	$183.49	$111.40	64.71%	18.78x	14.53x	1.80x	1.49x	1.26x	$989.62M	6.81%	$9.56B	120.58	$17.43B	12.41
MDXH	MDXHEALTH SA	$4.08	N/A	N/A	-0.54x	-7.16x	0.20x	-22.87x	N/A	-$14.21M	-70.34%	-$883.00k	-0.18	$116.89M	-18.11
CSTL	CASTLE BIOSCIENCES INC	$23.08	N/A	N/A	-74.45x	-35.51x	1.93x	1.47x	N/A	$34.57M	5.18%	$455.38M	15.75	$624.63M	19.18
NTRA	NATERA INC	$169.27	N/A	N/A	-115.15x	-87.33x	12.46x	18.64x	N/A	$85.19M	0.37%	$1.24B	9.20	$22.32B	-169.76
NOTV	INOTIV INC	$1.39	N/A	N/A	-0.44x	-5.15x	0.10x	0.30x	N/A	-$52.60M	-111.29%	$157.69M	4.64	$477.20M	84.42
PSNL	PERSONALIS INC	$8.12	N/A	N/A	-6.60x	-8.33x	8.95x	3.77x	N/A	-$49.18M	-6.85%	$190.83M	2.16	$700.07M	-8.83
STIM	NEURONETICS INC	$2.79	N/A	N/A	-2.45x	-4.98x	1.66x	6.80x	N/A	-$35.46M	-19.21%	$27.15M	0.41	$247.68M	-6.41
LAB	STANDARD BIOTOOLS INC	$1.28	N/A	N/A	-4.13x	-5.82x	3.16x	1.15x	N/A	-$105.46M	-21.64%	$424.54M	1.12	$358.95M	-3.74
CAI	CARIS LIFE SCIENCES INC	$30.48	N/A	N/A	N/A	-15.29x	N/A	18.93x	N/A	N/A	N/A	$452.90M	6.98	$8.22B	N/A
CDNA	CAREDX INC	$14.39	N/A	N/A	14.39x	-27.94x	2.29x	2.34x	N/A	$11.88M	1.52%	$327.37M	6.03	$719.95M	11.93
SERA	SERA PROGNOSTICS INC	$3.06	N/A	N/A	-3.60x	-4.19x	1,530.00x	1.32x	N/A	-$26.60M	-17.71%	$88.23M	1.80	$111.48M	-3.57
DRIO	DARIOHEALTH CORP	$15.30	N/A	N/A	-1.16x	-1.06x	1.40x	0.54x	N/A	-$26.92M	-70.90%	$63.99M	25.79	$44.47M	-1.18
BDSX	BIODESIX INC	$7.32	N/A	N/A	-1.31x	-1.26x	0.70x	47.16x	N/A	-$31.34M	-58.39%	$1.14M	0.16	$105.08M	-3.79
ISPC	ISPECIMEN INC	$0.87	N/A	N/A	-0.09x	N/A	0.37x	7.74x	N/A	-$6.19M	-285.50%	$621.97k	0.25	$4.51M	-0.55
OPK	OPKO HEALTH INC	$1.51	N/A	N/A	-6.57x	-4.23x	1.79x	0.92x	N/A	-$258.97M	-21.79%	$1.30B	1.65	$1.31B	22.06
BIAF	BIOAFFINITY TECHNOLOGIES INC	$2.72	N/A	N/A	-0.13x	N/A	0.28x	-1.21x	N/A	-$7.75M	-355.81%	-$2.14M	-2.67	$2.45M	-0.22
BNBX	APPLIED DNA SCIENCES INC	$4.29	N/A	N/A	-0.01x	N/A	0.74x	0.76x	N/A	-$13.26M	-540.37%	$7.26M	12.70	$397.11k	-0.03
FONR	FONAR CORP	$15.62	$7.69	102.99%	12.40x	N/A	0.93x	0.60x	17.34x	$7.47M	7.70%	$172.61M	27.79	$85.46M	5.29
NDRA	ENDRA LIFE SCIENCES INC	$6.48	N/A	N/A	0.54x	-0.79x	N/A	3.31x	N/A	-$5.60M	-120.45%	$1.47M	2.05	$3.96M	-0.46
MYNZ	MAINZ BIOMED NV	$1.60	N/A	N/A	-0.30x	-0.17x	7.62x	2.60x	N/A	-$15.42M	-306.56%	$2.52M	0.80	$6.59M	-0.36
PRPO	PRECIPIO INC	$19.04	N/A	N/A	-15.87x	N/A	1.36x	2.51x	N/A	$565.00k	1.96%	$12.29M	8.11	$32.31M	-347.47
TRIB	TRINITY BIOTECH PLC	$1.05	N/A	N/A	-0.58x	-0.12x	0.31x	-0.54x	N/A	-$15.27M	-80.95%	-$35.18M	-1.96	$114.45M	-5.76
IMDX	INSIGHT MOLECULAR DIAGNOSTICS INC	$3.89	N/A	N/A	-1.01x	-4.74x	29.25x	101.39x	N/A	-$24.00M	-19.25%	$1.10M	0.03	$88.72M	-1.45
VNRX	VOLITIONRX LTD	$0.46	N/A	N/A	-1.84x	N/A	35.38x	-1.56x	N/A	-$21.67M	-45.87%	-$31.82M	-0.31	$58.18M	-2.69
CHEK	CHECK-CAP LTD	$1.84	N/A	N/A	-0.43x	-0.92x	N/A	-7.42x	N/A	-$8.00M	-74.35%	-$1.45M	-0.25	$10.64M	-0.41
BNR	BURNING ROCK BIOTECH LTD	$8.36	N/A	N/A	-4.41x	N/A	1.21x	1.15x	N/A	-$11.55M	-12.83%	$78.58M	7.30	$32.10M	N/A
XWEL	XWELL INC	$0.99	N/A	N/A	-0.24x	N/A	0.18x	-1.10x	N/A	-$15.90M	-296.36%	-$5.18M	-0.96	$10.17M	-0.59
ADVB	ADVANCED BIOMED INC	$0.49	N/A	N/A	-3.06x	N/A	N/A	3.05x	N/A	-$5.86M	-58.16%	$3.48M	0.17	$7.74M	-2.66

Diagnostic & Research Stocks FAQ

What are the best diagnostic & research stocks to buy right now in Oct 2025?

According to Zen Ratings, our proprietary rating system that evaluates 115 factors proven to drive growth in stocks and assigns each stock in our system an overall letter grade as well as 7 individual Component Grades for Value, Growth, Momentum, Sentiment, Safety, Financials, and proprietary AI algorithms, the 3 best diagnostic & research stocks to buy right now are:

1. Sotera Health Co (NASDAQ:SHC)

Sotera Health Co (NASDAQ:SHC) is the #1 top diagnostic & research stock out of 56 with a Zen Rating of A. Stocks with a rating of A have had an average return of +32.52% per year. Learn more.

The Component Grade breakdown for Sotera Health Co (NASDAQ:SHC) is: Value: C, Growth: A, Momentum: C, Sentiment: B, Safety: A, Financials: C, and AI: C.

Sotera Health Co (NASDAQ:SHC) has a Due Diligence Score of 24, which is -2 points lower than the diagnostic & research industry average of 26. Although this number is below the industry average, our proven quant model rates SHC as a "A".

SHC passed 8 out of 33 due diligence checks and has weak fundamentals. Sotera Health Co has seen its stock return 0.99% over the past year, overperforming other diagnostic & research stocks by 8 percentage points.

Sotera Health Co has an average 1 year price target of $16.33, an upside of 6.4% from Sotera Health Co's current stock price of $15.35.

Sotera Health Co stock has a consensus Strong Buy recommendation according to Wall Street analysts. Of the 3 analysts covering Sotera Health Co, 66.67% have issued a Strong Buy rating, 0% have issued a Buy, 33.33% have issued a hold, while 0% have issued a Sell rating, and 0% have issued a Strong Sell.

2. Charles River Laboratories International (NYSE:CRL)

Charles River Laboratories International (NYSE:CRL) is the #2 top diagnostic & research stock out of 56 with a Zen Rating of A. Stocks with a rating of A have had an average return of +32.52% per year. Learn more.

The Component Grade breakdown for Charles River Laboratories International (NYSE:CRL) is: Value: C, Growth: B, Momentum: D, Sentiment: A, Safety: B, Financials: B, and AI: B.

Charles River Laboratories International (NYSE:CRL) has a Due Diligence Score of 14, which is -12 points lower than the diagnostic & research industry average of 26. Although this number is below the industry average, our proven quant model rates CRL as a "A".

CRL passed 4 out of 33 due diligence checks and has weak fundamentals. Charles River Laboratories International has seen its stock lose -12.75% over the past year, underperforming other diagnostic & research stocks by -6 percentage points.

Charles River Laboratories International has an average 1 year price target of $181.71, an upside of 8.79% from Charles River Laboratories International's current stock price of $167.03.

Charles River Laboratories International stock has a consensus Strong Buy recommendation according to Wall Street analysts. Of the 7 analysts covering Charles River Laboratories International, 57.14% have issued a Strong Buy rating, 14.29% have issued a Buy, 28.57% have issued a hold, while 0% have issued a Sell rating, and 0% have issued a Strong Sell.

3. Idexx Laboratories (NASDAQ:IDXX)

Idexx Laboratories (NASDAQ:IDXX) is the #3 top diagnostic & research stock out of 56 with a Zen Rating of B. Stocks with a rating of B have had an average return of +19.88% per year. Learn more.

The Component Grade breakdown for Idexx Laboratories (NASDAQ:IDXX) is: Value: C, Growth: C, Momentum: B, Sentiment: C, Safety: B, Financials: A, and AI: C.

Idexx Laboratories (NASDAQ:IDXX) has a Due Diligence Score of 50, which is 24 points higher than the diagnostic & research industry average of 26.

IDXX passed 17 out of 33 due diligence checks and has strong fundamentals. Idexx Laboratories has seen its stock return 30.19% over the past year, overperforming other diagnostic & research stocks by 37 percentage points.

Idexx Laboratories has an average 1 year price target of $639.29, an upside of 3.75% from Idexx Laboratories's current stock price of $616.15.

Idexx Laboratories stock has a consensus Buy recommendation according to Wall Street analysts. Of the 7 analysts covering Idexx Laboratories, 28.57% have issued a Strong Buy rating, 14.29% have issued a Buy, 57.14% have issued a hold, while 0% have issued a Sell rating, and 0% have issued a Strong Sell.

What are the diagnostic & research stocks with highest dividends?

Out of 6 diagnostic & research stocks that have issued dividends in the past year, the 3 diagnostic & research stocks with the highest dividend yields are:

1. Labcorp Holdings (NYSE:LH)

Labcorp Holdings (NYSE:LH) has an annual dividend yield of 1.04%, which is the same as the diagnostic & research industry average of 0.58%. Labcorp Holdings's dividend payout is stable, having never dropped by more than 10% in the last 10 years. Labcorp Holdings's dividend has not shown consistent growth over the last 10 years.

Labcorp Holdings's dividend payout ratio of 31.5% indicates that its dividend yield is sustainable for the long-term.

2. Quest Diagnostics (NYSE:DGX)

Quest Diagnostics (NYSE:DGX) has an annual dividend yield of 0.87%, which is the same as the diagnostic & research industry average of 0.58%. Quest Diagnostics's dividend payout is stable, having never dropped by more than 10% in the last 10 years. Quest Diagnostics's dividend has shown consistent growth over the last 10 years.

Quest Diagnostics's dividend payout ratio of 36.6% indicates that its dividend yield is sustainable for the long-term.

3. Agilent Technologies (NYSE:A)

Agilent Technologies (NYSE:A) has an annual dividend yield of 0.54%, which is the same as the diagnostic & research industry average of 0.58%. Agilent Technologies's dividend payout is stable, having never dropped by more than 10% in the last 10 years. Agilent Technologies's dividend has shown consistent growth over the last 10 years.

Agilent Technologies's dividend payout ratio of 22.9% indicates that its dividend yield is sustainable for the long-term.

Why are diagnostic & research stocks down?

Diagnostic & research stocks were down -2.08% in the last day, and down -2.92% over the last week. Volitionrx was the among the top losers in the diagnostics & research industry, dropping -23.33% yesterday.

VolitionRX shares are trading lower after the company announced pricing of $6 million offering of common stock and warrants.

What are the most undervalued diagnostic & research stocks?

Based on the Valuation rating, one of the 7 components of a stocks overall Zen Ratings grade, which evaluates factors including estimated earnings yield, earnings before interest and taxes/enterprise value, cash flow yield, free cash flow to price, and price-to-earnings growth (PEG ratio), the 3 most undervalued diagnostic & research stocks right now are:

1. Icon (NASDAQ:ICLR)

Icon (NASDAQ:ICLR) is the most undervalued diagnostic & research stock based on its Valuation Rating of B. Valuation is one of 7 Component Grades used to calculate the overall Zen Rating.

Icon has a valuation score of 43, which is 28 points higher than the diagnostic & research industry average of 15. It passed 3 out of 7 valuation due diligence checks.

Icon's stock has dropped -38.07% in the past year. It has underperformed other stocks in the diagnostic & research industry by -31 percentage points.

2. Illumina (NASDAQ:ILMN)

Illumina (NASDAQ:ILMN) is the second most undervalued diagnostic & research stock based on its Valuation Rating of B. Valuation is one of 7 Component Grades used to calculate the overall Zen Rating.

Illumina has a valuation score of 29, which is 14 points higher than the diagnostic & research industry average of 15. It passed 2 out of 7 valuation due diligence checks.

Illumina's stock has dropped -34.71% in the past year. It has underperformed other stocks in the diagnostic & research industry by -28 percentage points.

3. Qiagen Nv (NYSE:QGEN)

Qiagen Nv (NYSE:QGEN) is the third most undervalued diagnostic & research stock based on its Valuation Rating of B. Valuation is one of 7 Component Grades used to calculate the overall Zen Rating.

Qiagen Nv has a valuation score of 29, which is 14 points higher than the diagnostic & research industry average of 15. It passed 2 out of 7 valuation due diligence checks.

Qiagen Nv's stock has gained 8.25% in the past year. It has overperformed other stocks in the diagnostic & research industry by 15 percentage points.

Are diagnostic & research stocks a good buy now?

50% of diagnostic & research stocks rated by analysts are a strong buy right now. On average, analysts expect diagnostic & research stocks to rise by 8.73% over the next year.

4.44% of diagnostic & research stocks have a Zen Rating of A (Strong Buy), 11.11% of diagnostic & research stocks are rated B (Buy), 66.67% are rated C (Hold), 11.11% are rated D (Sell), and 6.67% are rated F (Strong Sell).

What is the average p/e ratio of the diagnostics & research industry?

The average P/E ratio of the diagnostics & research industry is 22.57x.

WallStreetZen does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.

Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.