Blood-Culture Bottles: Matching System, Medium, and Labeled Fill

When a hospital microbiology laboratory runs automated blood culture instruments—bioMérieux BacT/ALERT, BD BACTEC, or Thermo Scientific VersaTREK—a standing order for culture bottles is not a commodity purchase. If your requisition still references standard aerobic and anaerobic bottles that bioMérieux plans to discontinue in the United States by the end of 2026, ordering the right replacement means settling three linked decisions at once.

First, the installed instrument system decides which bottles can be received. FDA clears blood culture bottles under product code MDB (‘System, Blood Culturing’), regulation 21 CFR 866.2560, as parts of automated blood culturing systems, and their labeling ties each family to its instruments: bioMérieux lists the BacT/ALERT 3D and VIRTUO systems as the related instruments for BACT/ALERT media, the BD BACTEC Peds Plus/F 510(k) names the BACTEC FX, FX40, 9240, and 9050 fluorescent-series instruments, and Thermo Fisher sells REDOX media as part of the VersaTREK system. Nothing in that labeling supports loading one system's bottles into another system's analyzer, so a generic ‘aerobic bottle’ line item is not a valid substitute.

Second, the medium and patient population pick the catalog number. Adult aerobic and anaerobic bottles are labeled for adult-size samples: bioMérieux lists BACT/ALERT FA Plus (30 mL of medium) and FN Plus (40 mL of medium) for up to 10 mL of blood or sterile body fluid, and BD's pocket guide gives an optimal 8 to 10 mL fill for adult BACTEC vials with a 3 to 7 mL minimum band. Pediatric bottles are separate small-volume SKUs: FDA's review of BACT/ALERT PF Plus covers blood sample volumes of 0.1 to 4.0 mL, and the BD BACTEC Peds Plus/F 510(k) labels that vial for specimens generally under 3.0 mL. Specialty bottles for mycobacteria, fungi, and platelet quality control are ordered by exact REF.

Third, receiving evidence. If your standing order still carries bioMérieux standard aerobic (REF 259789) or standard anaerobic (REF 259790) bottles, the FAN PLUS items bioMérieux lists as currently available in the US are FA Plus (REF 410851), FN Plus (REF 410852), PF Plus (REF 410853), and collection kit 422080. At the dock, receiving teams should capture lot and expiry, check the labeled storage range for the exact REF (the GUDID record reviewed for BACT/ALERT PF bottles lists 15 °C to 30 °C), match package GTINs to GUDID, and note whether the SKU carries a manufacturer fill-to mark or only label graduations.

In materials management (MMIS) catalogs, blood culture bottles can end up beside phlebotomy tubes because both are filled at the bedside. Regulatorily they are a different device type: FDA lists them under product code MDB (‘System, Blood Culturing’) and regulation 21 CFR 866.2560 (‘Microbial growth monitor’), in the microbiology panel.

Section 866.2560 places microbial growth monitors in Class I and exempts them from premarket notification, with one exception written into the classification paragraph itself: automated blood culturing system devices used to test blood and other normally sterile body fluids remain subject to 510(k). ‘Class I’ on a bottle record therefore does not mean ‘no clearance.’ The bottle is one half of an instrument-read system—an inoculated bottle is placed in the analyzer, incubated, and monitored for microbial growth—which is why medium, container, and detection system are reviewed together. That also separates culture bottles from evacuated blood collection tubes and capillary collection tubes, which are specimen containers for downstream testing rather than incubation media read by a dedicated instrument.

Because of that exception, bottle families reach the US market through individual 510(k) decisions. Three examples from FDA records:

• BACT/ALERT FA Plus Culture Bottle: found substantially equivalent under K121461 (decision dated January 22, 2013), product code MDB.

• BacT/ALERT PF Plus Culture Bottle: K121446, for use with the BacT/ALERT Microbial Detection System; the decision summary lists a 0.1 to 4.0 mL blood sample volume, prescription use, and adsorbent polymeric beads in place of the predicate's charcoal.

• BD BACTEC Peds Plus/F Culture Vials: K173873, submitted to update the intended-use blood volume to 3.0 mL (the predicate labeling listed 0.5 and 5.0 mL); the summary describes 40 mL of enriched soybean-casein digest broth and principal use with BACTEC FX, FX40, 9240, and 9050 instruments.

This regulatory boundary reinforces the primary rule of blood culture procurement: buyers cannot purchase bottles based solely on volumetric capacity or unit price. Every bottle line item must directly map to an installed, qualified instrument fleet. When ordering sterile pre-analytical blood supplies—such as blood gas syringes or culture bottles—materials managers must align the consumable's cleared intended-use statement directly with the hospital's clinical laboratory analyzers.

To prevent ordering errors, receiving rejections, and inventory mix-ups, buyers and inventory planners can work from one matrix that maps each system, medium family, catalog REF, patient population or specimen, medium volume, labeled specimen volume, and instrument family. Values come from each manufacturer's catalog or the FDA review cited in this guide; ‘not stated’ means the retained public sources do not give the value, so take it from the current instructions for use before loading the item master.

Two columns are easy to conflate. Medium volume is the broth the manufacturer puts in the bottle—from 10 mL in the BACT/ALERT MP bottle to 40 mL in several adult, pediatric, and platelet bottles—while Thermo Fisher names VersaTREK bottles by their 40 mL and 80 mL formats. Labeled specimen volume is how much sample the bottle is labeled to receive. Record both as separate item-master attributes so a larger bottle is not mistaken for a larger required draw. bioMérieux lists the BacT/ALERT 3D and VIRTUO systems as related instruments; confirm model-level compatibility in the instructions for use, especially for specialty bottles.

Adult blood cultures are usually ordered as aerobic and anaerobic pairs; bioMérieux describes its routine portfolio as needing only two bottle types, aerobic and anaerobic. For purchasing, the key distinction is between the medium already in the bottle and the specimen volume the label is written for.

The medium is a factory-filled broth: supplemented tryptic soy broth in BACT/ALERT SA and SN bottles, supplemented complex media with adsorbent polymeric beads in FAN PLUS bottles, and enriched soybean-casein digest broth with CO2 and N2 in BACTEC Peds Plus/F. The labeled fill is the specimen volume the bottle is designed to receive, and the two are not the same thing. FDA's PF Plus review shows why: bottles were tested for enough vacuum to draw 10 mL directly even though PF Plus is labeled for up to 4 mL, and the package insert carries an overdraw caution.

Volume practice rests on a recognized consensus guideline. CLSI lists the second edition of M47, Principles and Procedures for Blood Cultures (April 22, 2022), as FDA-recognized; it covers medium-formulation selection, pediatric blood cultures, and patients receiving antimicrobial therapy. The full text is sold by CLSI, so the volume figures in this guide come from manufacturer labels and BD's guide, which cites M47. Alberta Health Services' collection guideline states the rationale in one line: the rate of isolation of microorganisms from blood is directly related to the volume of blood collected.

Bottle labels and manufacturer documents express volume in different terms, and buyers and laboratory liaisons should recognize each:

• bioMérieux BACT/ALERT FA Plus and FN Plus: the manufacturer's media table lists up to 10 mL of blood or sterile body fluid, and bioMérieux says fill-to marks on its bottles guide optimal blood volume.

• BD BACTEC adult vials: BD's March 2025 pocket guide gives an optimal fill of 8 to 10 mL per vial with a 3 to 7 mL minimum band, citing CLSI M47 and BD instructions for use.

• Thermo Scientific VersaTREK REDOX 1 and 2: the catalog lists a 0.1 to 10 mL specimen volume for blood and sterile body fluid in the 80 mL bottle format, and Thermo Fisher claims a 1:9 blood-to-broth dilution ratio.

Underfilling and overfilling both matter to the laboratory. The AHS guideline notes that underfilling can reduce detection or lengthen time to detection, and that overfilling dilutes the medium and antibiotic-absorbing resin with a similar effect. For a buyer, the practical point is that labeled ranges are product attributes to record and communicate, not bedside instructions; collection volumes for individual patients belong to laboratory policy and the instructions for use.

Pediatric bottles are not adult bottles with less blood in them. They are separately cleared SKUs with their own formulation and labeled volume range, so the catalog should carry them as distinct items rather than relying on wards to underfill adult stock.

The retained evidence shows three different manufacturer approaches to low-volume draws:

• BACT/ALERT PF Plus (REF 410853): 30 mL of medium with adsorbent polymeric beads. bioMérieux lists up to 4 mL of blood, and FDA's K121446 review covers 0.1 to 4.0 mL. The review also records a package-insert caution about drawing more than 4 mL by direct draw, because the bottle retains substantial vacuum.

• BD BACTEC Peds Plus/F (REF 442020): 40 mL of enriched soybean-casein digest broth with resins. K173873 set the intended-use blood volume at 3.0 mL for specimens generally under 3.0 mL, with the SPS concentration adjusted for 0.5 to 5.0 mL per vial.

• VersaTREK REDOX: no separate pediatric medium. Thermo Fisher positions REDOX 1 and 2 for all patient populations, sells 40 mL and 80 mL sizes, and states they are the only media FDA-cleared for draws as low as 0.1 mL—a manufacturer claim not independently verified here.

Pediatric collection targets are set by patient weight under local policy—the AHS guideline, for example, publishes a weight-based volume table—so the procurement task is narrower: stock the pediatric SKU your laboratory validated, keep it as a mandatory separate line item, and make sure any backorder substitution stays within the same instrument family and pediatric labeling.

Beyond routine adult and pediatric cultures, laboratories and blood services use specialty bottles for defined workflows such as mycobacterial culture and platelet quality-control screening. These SKUs are ordered by exact catalog reference and are not substitutes for routine media, or for each other.

Routine media are formulated for common bacteria and yeasts. Mycobacteria and some fungi need dedicated formulations:

• bioMérieux BACT/ALERT MP (REF 419744): 10 mL of supplemented Middlebrook 7H9 broth for processed specimens or sterile body fluids other than blood, at a 0.5 mL specimen volume. bioMérieux lists it for use with REF 414997, so the two items should be ordered and received together.

• BD BACTEC Myco/F Lytic (REF 442794): listed by BD for recovery of yeast, fungi, and mycobacteria. Take medium volume, specimen types, and specimen volume from the current BD instructions for use before setting item-master attributes.

Blood banks and transfusion services that screen platelet components use dedicated platelet quality-control bottles rather than routine blood culture media:

• bioMérieux BACT/ALERT BPA (aerobic, REF 279018; EU REF 279044) and BPN (anaerobic, REF 279019; EU REF 279045): 40 mL of supplemented tryptic soy broth, listed for leukocyte-reduced apheresis platelet units and leukocyte-reduced whole-blood platelet concentrates (single units or pools of up to six). BPA is labeled for 4–10 mL and BPN for up to 10 mL.

• BD BACTEC Aerobic Platelet (REF 442053) and Anaerobic Platelet (REF 442054) media: listed in BD's US catalog. Confirm validated platelet product types and sample volumes in the current BD instructions for use.

Because these specialty bottles serve distinct departments (such as mycobacteriology laboratories and blood banks), usually move more slowly than routine media, and can depend on companion items such as the MP supplement, purchasing teams should keep their standing orders separate from routine emergency department and inpatient supply agreements.

An easily missed receiving detail is how volume guidance appears on the bottle itself. It determines whether ward staff can rely on a printed line or must work from label graduations.

The retained sources describe two patterns:

• Manufacturer fill-to mark: bioMérieux says BACT/ALERT fill-to marks guide optimal blood volume, and the AHS guideline confirms that FA Plus (REF 410851) and FN Plus (REF 410852) carry a manufacturer-indicated FILL line that staff should not draw over.

• No printed fill line: the AHS guideline states that BACT/ALERT PF Plus (REF 410853) has no manufacturer fill line and tells staff to mark volumes on BD BACTEC bottles, including Peds Plus/F (REF 442020). BD's pocket guide advises using label gradations to support accurate fill volumes.

For receiving and stocking, the consequence is simple: a pediatric or BACTEC bottle without a printed fill line is not a labeling defect, and hand-drawn ward marks are local practice rather than a manufacturer feature. Record the fill-guidance type as an item attribute so that a supplier substitution that changes label hardware is visible before it reaches the wards.

When blood culture media reach the receiving dock, a short verification routine before cartons go to laboratory stock catches most identity and dating problems.

Storage should be read, not assumed. The GUDID record reviewed for BACT/ALERT PF culture bottles lists a storage environment of 15 °C to 30 °C, while Thermo Fisher's catalog page for REDOX media says only to store away from direct sunlight, so the range for VersaTREK and BD items has to come from their own labeling. Shelf-life evidence can also span more than one condition—FDA's PF Plus review describes stability testing of bottles stored at 15–30 °C and at 2–8 °C—which is another reason to take the range from the current label rather than from a general rule. Inoculated bottles are a separate matter for laboratory policy; the AHS guideline, for example, requires room-temperature transport with no refrigeration. Our guide to labeled storage and transport for medical consumables covers how to turn labeled ranges into warehouse controls.

GUDID records give receiving teams a public reference for package identity. The openFDA query for the BACT/ALERT brand returns 27 records that mix instrument modules with culture bottles. The record for the older non-Plus BACT/ALERT PF bottle shows a primary device identifier plus package GTINs for 2-count and 50-count packages, lot and expiration tracking, single-use and prescription-only flags, product code MDB under 21 CFR 866.2560, and a reference 510(k). The same record shows those packages leaving commercial distribution on December 12, 2023—an example of why a retired REF should be checked against its GUDID status before it is reordered. Our explainer on UDI and GUDID for medical consumables covers how to build these identifiers into scanning and ERP item masters.

Procurement strategies for blood culture media must account for historical supply vulnerabilities and scheduled product phase-outs. Two major industry supply events illustrate why active catalog oversight is critical.

On July 10, 2024, FDA issued a Letter to Health Care Providers about interruptions in the supply of BD BACTEC blood culture media bottles caused by supplier issues, and updated its Medical Device Shortages List to include blood culture media bottles (product code MDB). FDA's July 12, 2024 roundup recommended that laboratories and health care providers consider strategies to conserve bottles for patients at highest risk. CDC's Laboratory Outreach Communication System issued a laboratory advisory dated July 10, 2024, noting that BD had told BACTEC users on June 11, 2024 to expect intermittent supply delays.

Because bottles are tied to the instrument fleet, BACTEC sites could not simply switch to BacT/ALERT or VersaTREK media without the corresponding analyzers. As of FDA's June 16, 2026 update, blood culture media bottles no longer appear on the current shortage list page. That is a dated observation, not a supply guarantee; recheck the list before setting buffer-stock levels.

bioMérieux's US notice says it plans to discontinue BACT/ALERT standard aerobic and anaerobic (SA and SN) bottles by the end of 2026 while gradually moving its portfolio to FAN PLUS bottles. The references it lists as impacted are:

• BACT/ALERT SA: REF 259789

• BACT/ALERT SN: REF 259790

• Blood Culture Collection Kit (Standard): REF 279102

• Blood Culture Collection Kit (FAN Plus Combo): REF 422081

The FAN PLUS items bioMérieux lists as currently available are FA Plus (REF 410851), FN Plus (REF 410852), PF Plus (REF 410853), and the Blood Culture Collection Kit (FAN Plus), REF 422080. Moving from SA/SN to FAN PLUS is a medium change, not a part-number swap: FA Plus holds 30 mL of medium versus 40 mL in SA, and FAN PLUS bottles contain adsorbent polymeric beads, so the laboratory should decide what verification it needs before the standing order changes. Starting the conversion well before the end-of-2026 date leaves time for laboratory sign-off and contract updates; bioMérieux says it offers evaluation, conversion, and contracting support.

A rigorous purchasing guide must delineate what the published regulatory and clinical evidence supports—and what it does not. Sourcing professionals must evaluate three critical evidence boundaries.

A bigger container does not by itself mean a bigger required fill or better performance. Samuel and colleagues (Diagnostic Microbiology and Infectious Disease, 2011) compared the two VersaTREK formats: the 40 mL EZ Draw bottle takes a maximum 5 mL inoculum, while the REDOX 80 mL bottle accommodates 10 mL.

In simulated cultures seeded with 15 clinically relevant organisms, the EZ Draw bottle flagged positive earlier than the 80 mL bottle for 13 of the 15, and the authors reported that the lower inoculum volume did not negatively affect time to positivity. It was a seeded comparison on one platform, so it does not rank systems; it does caution buyers against treating the bigger bottle as the better one.

bioMérieux's US transition page attributes enhanced recovery, faster time to detection, and antimicrobial neutralization to FAN PLUS bottles, citing manufacturer-selected studies. Those statements should stay attributed to the manufacturer, and the same discipline applies to BD's resin media and Thermo Fisher's dilution-ratio claim.

A peer-reviewed evaluation in the Journal of Clinical Microbiology (2013) divided 20 mL of adult blood equally across FA Plus, FN Plus, SA, and SN bottles—about 5 mL per bottle—and isolated clinically significant bacteria more often from the resin bottles, with faster detection in the aerobic resin bottle. The authors cautioned that the finding might not apply to the standard-practice 10 mL protocol. Treat performance advantages as specific, qualified findings rather than universal superiority.

Health-system documents such as Alberta Health Services Guideline PX26-02.110 assign cap and ring colors to specific REFs, set bottle order, and tell staff when to mark volumes by hand. They are useful examples of local practice, not universal manufacturer standards or federal requirements. Procurement specifications should rest on cleared intended use, catalog REF, and GUDID identity.